7x-2+3x+12=40

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Solution for 7x-2+3x+12=40 equation:


Simplifying
7x + -2 + 3x + 12 = 40

Reorder the terms:
-2 + 12 + 7x + 3x = 40

Combine like terms: -2 + 12 = 10
10 + 7x + 3x = 40

Combine like terms: 7x + 3x = 10x
10 + 10x = 40

Solving
10 + 10x = 40

Solving for variable 'x'.

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

Add '-10' to each side of the equation.
10 + -10 + 10x = 40 + -10

Combine like terms: 10 + -10 = 0
0 + 10x = 40 + -10
10x = 40 + -10

Combine like terms: 40 + -10 = 30
10x = 30

Divide each side by '10'.
x = 3

Simplifying
x = 3

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