40=7x+15-2x

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Solution for 40=7x+15-2x equation:


Simplifying
40 = 7x + 15 + -2x

Reorder the terms:
40 = 15 + 7x + -2x

Combine like terms: 7x + -2x = 5x
40 = 15 + 5x

Solving
40 = 15 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
40 + -5x = 15 + 5x + -5x

Combine like terms: 5x + -5x = 0
40 + -5x = 15 + 0
40 + -5x = 15

Add '-40' to each side of the equation.
40 + -40 + -5x = 15 + -40

Combine like terms: 40 + -40 = 0
0 + -5x = 15 + -40
-5x = 15 + -40

Combine like terms: 15 + -40 = -25
-5x = -25

Divide each side by '-5'.
x = 5

Simplifying
x = 5

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