Question

( X - 140 ) : 7 = 27 - 8 x 3

Answer 1

\(\left(x-140\right):7=27-8\times3\Rightarrow x=\left(27-24\right)\times7+140=161\)

Vậy x là 161

Answer 2

\(\left(x-140\right)\div7=27-8\times3\)

\(\Leftrightarrow\)\(\left(x-140\right)\div7=27-24\)

\(\Leftrightarrow\)\(\left(x-140\right)\div7=3\)

\(\Leftrightarrow\)\(\left(x-140\right)=3\times7\)

\(\Leftrightarrow\)\(x-140=21\)

\(\Leftrightarrow\)\(x=21+140\)

\(\Leftrightarrow\)\(x=161\)