3x+5x-4=12

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Solution for 3x+5x-4=12 equation: 


Simplifying
3x + 5x + -4 = 12

Reorder the terms:
-4 + 3x + 5x = 12

Combine like terms: 3x + 5x = 8x
-4 + 8x = 12

Solving
-4 + 8x = 12

Solving for variable 'x'.

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

Add '4' to each side of the equation.
-4 + 4 + 8x = 12 + 4

Combine like terms: -4 + 4 = 0
0 + 8x = 12 + 4
8x = 12 + 4

Combine like terms: 12 + 4 = 16
8x = 16

Divide each side by '8'.
x = 2

Simplifying
x = 2

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