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\(13\cdot42\cdot33\cdot26\cdot35\)
\(=\left(42\cdot35\right)\cdot\left(13\cdot26\right)\cdot33\)
\(=1470\cdot338\cdot33\)
\(=16396380\)
\(\dfrac{26}{7}\) x \(\dfrac{11}{3}-\dfrac{26}{7}\) x \(\dfrac{2}{3}-\dfrac{6}{3}\) x \(\dfrac{26}{7}\)
\(=\dfrac{26}{7}\) x \(\left(\dfrac{11}{3}-\dfrac{2}{3}-\dfrac{6}{3}\right)\)
\(=\dfrac{26}{7}\) x \(\dfrac{3}{3}\)
\(=\dfrac{26}{7}\) x \(1=\dfrac{26}{7}\)
26/7 x 11/3 - 26/7 x 2/3 - 6/3 x 26/7
=( 11/3 - 2/3 - 6/3 ) x26/7
= 1 x 26/7
= 26 /7
Tick cho mình nha
34 x 28 - 34 x 11 - 7 x 34
= 34 x (28 - 11 - 7)
= 34 x 10
= 340
\(=\dfrac{11}{12}\left(\dfrac{2}{7}+\dfrac{4}{7}+\dfrac{1}{7}\right)=\dfrac{11}{12}\cdot1=\dfrac{11}{12}\)
13/19 x 23/11 - 13/19 x 8/11 - 13/19 x 4/11
= 13/19 x (23/11 - 8/11 - 4/11)
= 13/19 x 1
= 13/19
\(\dfrac{13}{19}\times\dfrac{23}{11}-\dfrac{13}{19}\times\dfrac{8}{11}-\dfrac{13}{19}\times\dfrac{4}{11}\\ =\dfrac{13}{19}\times\left(\dfrac{23}{11}-\dfrac{8}{11}-\dfrac{4}{11}\right)\\ =\dfrac{13}{19}\times1=\dfrac{13}{19}\)
a) 86*(121-120+9)==86*10=860
b)136*(75+19+6)=136*100=13600
Mk giải r đó nha chắc chắn đúng
=11 x (35 + 42 + 22 + 1)
=11 x 100
=1100
học tốt em nhé
35 x 11+42x11+22x11+11
= (35 + 42 + 22 +11 ) x11 =
= 110 x11
=1210
121 x 34 + 11 x 11 x 50 + 121 x 26
= 121 x 34 + 121 x 50 + 121 x 26
= 121 x (34 + 50 + 26)
= 121 x 110
= 13 310
121 x 34 + 11 x 11 x 50 + 121 x 26
= 121 x ( 34 + 26 ) + 11 x 11 x 50
= 121 x ( 34 + 26 ) + 121 x 50
= 121 x ( 34 + 26 + 50 )
= 121 x 110
= 13 310