40=s+(2s+1s)-(2s)

Solution for 40=s+(2s+1s)-(2s) equation:

Simplifying
40 = s + (2s + 1s) + -1(2s)

Combine like terms: 2s + 1s = 3s
40 = s + (3s) + -1(2s)
40 = s + (3s) + -1(2s)

Remove parenthesis around (2s)
40 = s + (3s) + -1 * 2s

Multiply -1 * 2
40 = s + (3s) + -2s

Combine like terms: s + (3s) = 4s
40 = 4s + -2s

Combine like terms: 4s + -2s = 2s
40 = 2s

Solving
40 = 2s

Solving for variable 's'.

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

Add '-2s' to each side of the equation.
40 + -2s = 2s + -2s

Combine like terms: 2s + -2s = 0
40 + -2s = 0

Add '-40' to each side of the equation.
40 + -40 + -2s = 0 + -40

Combine like terms: 40 + -40 = 0
0 + -2s = 0 + -40
-2s = 0 + -40

Combine like terms: 0 + -40 = -40
-2s = -40

Divide each side by '-2'.
s = 20

Simplifying
s = 20