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NA
1
6 tháng 3 2018
-1/16-1/5= -1/5
11/36- - 7/24= 1/2
-5/9- - 5/12= -1/10
chúc mày học dốt:)))
2 tháng 3 2020
\(a,\left(36+79\right)+\left(145-79-36\right)\)
\(=36-36+79-79+145\)
\(=145\)
W
2 tháng 3 2020
6)(36+79)+(145-79-36)
= 36+79+145-79-36
= (36-36)+(79-79)+145
=145
7)3.10-[12-(-9-1)]
=30-(12-9+1)
=30-12+9-1
=26
8)45-5.(12+9)
=45-60-45
=(45-45)-60
=0-60
=-60
9)24.(16-5)-16.(24-5)
=24.16-14.5-16.24+16.5
=16.5-14.5
=5(16-14)
=5.2
=10
10)-23.63+23.21-58.23
= 23(-63+21-58)
=23.-100
=-2300
11)[(-851)+5924]+[(-5924)+851]
=-851+5924-5924+851
=(-851+851)+(5924-5924)
=0+0
=0
2 tháng 6 2021
-5/9 - ( -5/12 ) =-5/9+5/12=-20/36+15/36=-5/36
-1/16 - 1/15=-15/240-16/240=-31/240
11/36 - ( -7/24 )=11/36+7/24=22/72+21/72 =43/72
O
2 tháng 6 2021
\(-\frac{5}{9}-\left(-\frac{5}{12}\right)=-\frac{60}{108}-\left(-\frac{45}{108}\right)=-\frac{15}{108}=-\frac{5}{36}.\)
\(\frac{-1}{6}-\frac{1}{15}=\frac{-5}{30}-\frac{2}{30}=\frac{-7}{30}\)
\(\frac{11}{36}-\left(-\frac{7}{24}\right)=\frac{22}{72}-\left(-\frac{21}{72}\right)=\frac{43}{72}\)
VC
Vũ Cao Minh⁀ᶦᵈᵒᶫ ( ✎﹏IDΣΛ亗 )
CTV
VIP
30 tháng 7 2019
\(\left(a\right)\frac{3}{7}-\left(\frac{-2}{7}\right)=\frac{3}{7}+\frac{2}{7}=\frac{5}{7}\)
\(\left(b\right)\frac{-13}{11}+\frac{6}{22}-\frac{36}{33}=\frac{-39}{33}+\frac{9}{33}-\frac{36}{33}=\frac{-66}{33}=-2\)
VH
30 tháng 7 2019
\(a,\frac{3}{7}-\frac{-2}{7}=\frac{3-\left(-2\right)}{7}=\frac{3+2}{7}=\frac{5}{7}\)
\(b,-\frac{13}{11}+\frac{6}{22}-\frac{36}{33}=-\frac{13}{11}+\frac{3}{11}-\frac{12}{11}=\frac{-13+3-12}{11}=-\frac{22}{11}=-2\)
\(c,-\frac{6}{17}-\frac{5}{-12}+\frac{3}{81}=-\frac{6}{17}+\frac{5}{12}+\frac{1}{27}=\frac{-6.27.12+5.17.27+17.12}{17.12.27}=\frac{185}{1836}\)
\(\frac{2}{70}-\frac{9}{-24}+\frac{-5}{42}=\frac{1}{35}+\frac{3}{8}-\frac{5}{42}=\frac{1.24+105.3-5.20}{840}=\frac{239}{840}\)
CT
1
NK
10 tháng 8 2016
2/3-6/12+1/4 = 5/12
4/12-18/24+5/2 = 25/12
-5/7*11/9+5/7*4/9 = -5/9
-3/8*13/11-3/8*3/11 = -6/11
17 tháng 4 2020
d=43/37d=43/37 × 23/15−43/3723/15−43/37 × 8/15+31/378/15+31/37
=43/37=43/37 x 23/15+43/3723/15+43/37 x (−8/15)+31/37(−8/15)+31/37
=43/37(23/15−8/15)+31/37=43/37(23/15−8/15)+31/37
=43/37.1+31/37=43/37.1+31/37
=2=2
E=−5/24E=−5/24 × 9/11−5/249/11−5/24 × 2/11+7/122/11+7/12
=−5/24(9/11+2/11)+7/12=−5/24(9/11+2/11)+7/12
=−5/24.1+7/12=−5/24.1+7/12
=3/8=3/8
a)3/7–−11/14−7/3×6/7a)3/7–−11/14−7/3×6/7
=3/7−−11/14−2=3/7−−11/14−2
=3/7+11/14−2=3/7+11/14−2
=−11/14=−11/14
b)6/5:3/2+−2/3×9/14b)6/5:3/2+−2/3×9/14
=4/5−3/7=4/5−3/7
=13/35
17 tháng 4 2020
d=43/37d=43/37 × 23/15−43/3723/15−43/37 × 8/15+31/378/15+31/37
=43/37=43/37 x 23/15+43/3723/15+43/37 x (−8/15)+31/37(−8/15)+31/37
=43/37(23/15−8/15)+31/37=43/37(23/15−8/15)+31/37
=43/37.1+31/37=43/37.1+31/37
=2=2
E=−5/24E=−5/24 × 9/11−5/249/11−5/24 × 2/11+7/122/11+7/12
=−5/24(9/11+2/11)+7/12=−5/24(9/11+2/11)+7/12
=−5/24.1+7/12=−5/24.1+7/12
=3/8=3/8
a)3/7–−11/14−7/3×6/7a)3/7–−11/14−7/3×6/7
=3/7−−11/14−2=3/7−−11/14−2
=3/7+11/14−2=3/7+11/14−2
=−11/14=−11/14
b)6/5:3/2+−2/3×9/14b)6/5:3/2+−2/3×9/14
=4/5−3/7=4/5−3/7
=13/35
a 11/36 - ( -7 )/24
= 11/36 + 7/24
= 22/72 + 21/72
= 43/72
-5/9 - -5/12
= -5/9 + 5/12
= -20/36 + 15/36
= -5/36
\(\frac{11}{36}-\frac{-7}{24}=\frac{11}{36}+\frac{7}{24}=\frac{22}{72}+\frac{21}{72}=\frac{43}{72}\)
\(-\frac{5}{9}-\frac{-5}{12}=-\frac{5}{9}+\frac{5}{12}=-\frac{20}{36}+\frac{15}{36}=-\frac{5}{36}\)