40=2(15+w)

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Solution for 40=2(15+w) equation:


Simplifying
40 = 2(15 + w)
40 = (15 * 2 + w * 2)
40 = (30 + 2w)

Solving
40 = 30 + 2w

Solving for variable 'w'.

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

Add '-2w' to each side of the equation.
40 + -2w = 30 + 2w + -2w

Combine like terms: 2w + -2w = 0
40 + -2w = 30 + 0
40 + -2w = 30

Add '-40' to each side of the equation.
40 + -40 + -2w = 30 + -40

Combine like terms: 40 + -40 = 0
0 + -2w = 30 + -40
-2w = 30 + -40

Combine like terms: 30 + -40 = -10
-2w = -10

Divide each side by '-2'.
w = 5

Simplifying
w = 5

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