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\(\dfrac{177}{x}-\dfrac{96}{x}+\dfrac{21}{x}=6\left(x\ne0\right)\\ \dfrac{177-96+21}{x}=6\\ \dfrac{102}{x}=6\\ 6\times x=102\\ x=102:6=17\)
\(\dfrac{177}{x}-\dfrac{96}{x}+\dfrac{21}{x}=6\)
\(\dfrac{1}{x}\left(177-96+21\right)=6\)
\(102:x=6\)
\(x=102:6\)
\(x=17\)
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1: =354(4+5+1)-350
=3540-350
=3190
2:
a: 19040:x=340
=>x=19040/340=56
b: x-3678=2541*4
=>x-3678=10164
=>x=10164+3678=13842
c: x*282-270*x=1512
=>12x=1512
=>x=126
d: =>(177-96+21):x=6
=>102:x=6
=>x=102/6=17
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[6: 3/5 - 7/6 x 6/7] : [ 21/5 x 10/11 + 57/11]
= 9 : 9
= 1
\(\left(6:\frac{3}{5}-\frac{7}{6}\times\frac{6}{7}\right):\left(\frac{21}{5}\times\frac{10}{11}+\frac{57}{11}\right)\)
\(=\left(10-1\right):\left(\frac{42}{11}+\frac{57}{11}\right)\)
\(=9:9\)
\(=1\)
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số cần tìm là :
73/ 98 - 1/6 = 85/147
Đ / S : ......
Nhớ K mik nha
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a: =735+23-135+177=600+200=800
b: =124-312+76-112+21=200-424+21=-203
c: =183+21+65-183-21=65
d: \(=-271+37-160+31-137=-500\)
e: =-3a+b-3c+b+3c+2a-2b
=-a
![](https://rs.olm.vn/images/avt/0.png?1311)
b,21/17x13/14x56x3/42
=21/17x3/42x56x13/14
=21x3/17x42 x 56x13/14
=21x3/17x21x2 x 14x4x13/14
=3/17x2 x 4x13
=3/24 x 52=3x52/24
=3x52/3x8
=52/8=13/2
a, 6/7 x 16/15 x 7/6 x 21/32
=(6/7 x 7/6)x16/15x21/32
=16/15x21/32
=16x21/15x32
=16x3x7/3x5x16x2
=7/5x2=7/10
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\(x-\frac{3}{5}=1\div3\)
\(x-\frac{3}{5}=\frac{1}{3}\)
\(x=\frac{1}{3}+\frac{3}{5}=\frac{14}{15}\)
Chắc x 1/6 = 5 : 4 là phép nhân
\(x\times\frac{1}{6}=5\div4\)
\(x\times\frac{1}{6}=\frac{5}{4}\)
\(x=\frac{5}{4}\div\frac{1}{6}\)
\(x=\frac{15}{2}\)
x-3/5=1/3
x=1/3+3/5
x=14/15
x.1/6=5/4
x=5/4:1/6
x=5/4x6
x=15/2
![](https://rs.olm.vn/images/avt/0.png?1311)
`177:x-96:x+21:x=6`
`(177-96+21):x=6`
`102:x=6`
`x=102:6`
`x=17`
Vậy `x=17`
177 : x - 96 : x + 21 : x = 6
= x : ( 177 - 96 + 21 ) = 6
= x : 102 = 6
= x = 6 x 102
= x = 612