Question

Câu 10. Mọi người giúp mình với

Answer 1

a,=(3+5+2).7/10

=10.7/10

=7

Answer 2

\(=\dfrac{7}{10}\times\left(2+3+5\right)=\dfrac{7}{10}\times10=\dfrac{70}{10}=7\)

Answer 3

\(c10:\left(3+2+5\right)\times\dfrac{7}{10}=10\times\dfrac{7}{10}=\dfrac{70}{10}=7\)

Answer 4

\(3\times\dfrac{7}{10}+\dfrac{7}{10}\times5+2\times\dfrac{7}{10}=\) 

\(=3\times\dfrac{7}{10}+5\times\dfrac{7}{10}+2\times\dfrac{7}{10}\) 

\(=\left(3+5+2\right)\times\dfrac{7}{10}\) 

\(=10\times\dfrac{7}{10}\) 

\(=7\)