3x-2+x+12=84

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Solution for 3x-2+x+12=84 equation:


Simplifying
3x + -2 + x + 12 = 84

Reorder the terms:
-2 + 12 + 3x + x = 84

Combine like terms: -2 + 12 = 10
10 + 3x + x = 84

Combine like terms: 3x + x = 4x
10 + 4x = 84

Solving
10 + 4x = 84

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 + 4x = 84 + -10

Combine like terms: 10 + -10 = 0
0 + 4x = 84 + -10
4x = 84 + -10

Combine like terms: 84 + -10 = 74
4x = 74

Divide each side by '4'.
x = 18.5

Simplifying
x = 18.5

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