Question

x+5 (x+3)=75
6x + 15=75
6x = -15+75
6x=60
x=60%6
x=10​

Answer 1

$x + 5(x + 3) = 75 \\ x + 5x + 15 = 75 \\ 6x + 15 = 75 \\ 6x = 75 - 15 \\ 6x = 60 \\ x = \frac{60}{6} \\ x = 10$