Question

$2(x+1).(4+1)=20$

Answer 1

2 (x+1)(4+1) = 20

2 (x + 1) x 5 = 20

2 x 5 (x + 1) = 20

10 (x + 1) = 20

10x + 10 = 20

10x = 20 - 10

10x = 10

x = 10 = x = 1
10