Solve the following equation and check your result: x = 45(x+10)

x = 45(x+10)
Multiply both sides by 5,
5x = 4(x+10)
5x = 4x + 40
Transpose 4x to LHS
5x - 4x = 40
x = 40
LHS → x = 40
RHS → 45(x+10) = 45(40+10) = 45 × 50 = 40
LHS = RHS
Hence proved