\(e,\Leftrightarrow3\left(x+1\right)=72-15=57\\ \Leftrightarrow x+1=19\Leftrightarrow x=18\\ d,\Leftrightarrow5x=360:\left(8\cdot9\right)=360:72=5\\ \Leftrightarrow x=1\)
e) \(15+3\left(x+1\right)=144:2\)
\(\Rightarrow15+3\left(x+1\right)=72\)
\(\Rightarrow3\left(x+1\right)=57\Rightarrow x+1=19\Rightarrow x=18\)
f) \(360:5x=2^3.3^2\Rightarrow360:5x=72\)
\(\Rightarrow5x=5\Rightarrow x=1\)
e)15+3.(x+1)=72
3.(x+1)=72-15
3.(x+1)=57
x+1=57:3
x+1=19
x=19-1
x=18
f)360:5x=72
5x=360:72
5x=5
x=5:5
x=1
