"x" là dấu nhân hay ẩn số v bn?
\(-8+30\left(A+2\right)-6\left(A-50\right)-24=10\)
\(\Rightarrow-8+30A+60-6A+300-24=10\)
\(\Rightarrow328+24A=10\)
\(\Rightarrow24A=10-328\)
\(\Rightarrow24A=-318\)
\(\Rightarrow A=\frac{-318}{24}=\frac{-53}{4}=-13,25\)