40x+3(2-x)=80

Solution for 40x+3(2-x)=80 equation:

Simplifying
40x + 3(2 + -1x) = 80
40x + (2 * 3 + -1x * 3) = 80
40x + (6 + -3x) = 80

Reorder the terms:
6 + 40x + -3x = 80

Combine like terms: 40x + -3x = 37x
6 + 37x = 80

Solving
6 + 37x = 80

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-6' to each side of the equation.
6 + -6 + 37x = 80 + -6

Combine like terms: 6 + -6 = 0
0 + 37x = 80 + -6
37x = 80 + -6

Combine like terms: 80 + -6 = 74
37x = 74

Divide each side by '37'.
x = 2

Simplifying
x = 2