x+x+x+5+x+7=40

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Solution for x+x+x+5+x+7=40 equation:


Simplifying
x + x + x + 5 + x + 7 = 40

Reorder the terms:
5 + 7 + x + x + x + x = 40

Combine like terms: 5 + 7 = 12
12 + x + x + x + x = 40

Combine like terms: x + x = 2x
12 + 2x + x + x = 40

Combine like terms: 2x + x = 3x
12 + 3x + x = 40

Combine like terms: 3x + x = 4x
12 + 4x = 40

Solving
12 + 4x = 40

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + 4x = 40 + -12

Combine like terms: 12 + -12 = 0
0 + 4x = 40 + -12
4x = 40 + -12

Combine like terms: 40 + -12 = 28
4x = 28

Divide each side by '4'.
x = 7

Simplifying
x = 7

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