a) \(\Rightarrow\left(x-45\right):2=60\)
\(\Rightarrow x-45=120\Rightarrow x=165\)
b) \(\Rightarrow\left(x-2\right)\times4-12=152\)
\(\Rightarrow\left(x-2\right)\times4=164\)
\(\Rightarrow x-2=41\Rightarrow x=43\)
Chị gửi em nha bé,đúng tích cho chị nhé em^^