3x+x+12=7x-20+35

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Solution for 3x+x+12=7x-20+35 equation:


Simplifying
3x + x + 12 = 7x + -20 + 35

Reorder the terms:
12 + 3x + x = 7x + -20 + 35

Combine like terms: 3x + x = 4x
12 + 4x = 7x + -20 + 35

Reorder the terms:
12 + 4x = -20 + 35 + 7x

Combine like terms: -20 + 35 = 15
12 + 4x = 15 + 7x

Solving
12 + 4x = 15 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
12 + 4x + -7x = 15 + 7x + -7x

Combine like terms: 4x + -7x = -3x
12 + -3x = 15 + 7x + -7x

Combine like terms: 7x + -7x = 0
12 + -3x = 15 + 0
12 + -3x = 15

Add '-12' to each side of the equation.
12 + -12 + -3x = 15 + -12

Combine like terms: 12 + -12 = 0
0 + -3x = 15 + -12
-3x = 15 + -12

Combine like terms: 15 + -12 = 3
-3x = 3

Divide each side by '-3'.
x = -1

Simplifying
x = -1

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