Question

please solve it by quadratic equation

Answer 1

x+5(x+8)=x-8(3x-5)
x+5x+40=x-21x-40
x+x+21x-x=-40-40
22x=-80
x=80÷22
x=40upon11

Answer 2

There's mistake in pic 2 ::: 21+0 = 21

Thank you