Question

88 - ( 7 +  Y  ) x  3  =  64

Answer 1

\(88-\left(7+y\right)\cdot3=64\)

\(\Rightarrow\left(7+y\right)\cdot3=88-64\)

\(\Rightarrow\left(7+y\right)\cdot3=24\)

\(\Rightarrow7+y=24:3\)

\(\Rightarrow7+y=8\)

\(\Rightarrow y=8-7\)

\(\Rightarrow y=1\)

Answer 2

=>(y+7)*3=24

=>y+7=8

=>y=1

Answer 3

\(\Leftrightarrow3\left(y+7\right)=24\Leftrightarrow y+7=8\Leftrightarrow y=1\)

Vậy, y=1