3x+20-x+12=30

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Solution for 3x+20-x+12=30 equation:


Simplifying
3x + 20 + -1x + 12 = 30

Reorder the terms:
20 + 12 + 3x + -1x = 30

Combine like terms: 20 + 12 = 32
32 + 3x + -1x = 30

Combine like terms: 3x + -1x = 2x
32 + 2x = 30

Solving
32 + 2x = 30

Solving for variable 'x'.

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

Add '-32' to each side of the equation.
32 + -32 + 2x = 30 + -32

Combine like terms: 32 + -32 = 0
0 + 2x = 30 + -32
2x = 30 + -32

Combine like terms: 30 + -32 = -2
2x = -2

Divide each side by '2'.
x = -1

Simplifying
x = -1

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