Question

Answer 1

\(a,\Rightarrow5\left(x-3\right)=30\\ \Rightarrow x-3=6\\ \Rightarrow x=9\\ b,\Rightarrow2x+10=4^2=16\\ \Rightarrow2x=6\\ \Rightarrow x=3\)

Answer 2

a) \(\Rightarrow5\left(x-3\right)=70-45\\ \Rightarrow x-3=25:5\\ \Rightarrow x=5+3\\ \Rightarrow x=8\)

b)\(\Rightarrow10+2x=4^2\\ \Rightarrow10+2x=16\\ \Rightarrow2x=16-10\\ \Rightarrow x=6:2\\ \Rightarrow x=3\)