Question

if 6 (2×+5)=2×+40 find x​

Answer 1

$\: 6(2x + 5) = 2x + 40 \\ \: 12x + 30 = 2x + 40 \\ 12x - 2x = 40 - 30 \\ 10x = 10 \\ \: \: x = 1$

Answer 2

$6(2x + 5) = 2x + 40$

$12x + 30 = 2x + 40$

$0 = 2x - 12x + 40 - 30$

$0 = -10x + 10$

$-10/10 = x$

${\boxed {x = -1}}$