3x-12-4=8x+6.9

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Solution for 3x-12-4=8x+6.9 equation:


Simplifying
3x + -12 + -4 = 8x + 6.9

Reorder the terms:
-12 + -4 + 3x = 8x + 6.9

Combine like terms: -12 + -4 = -16
-16 + 3x = 8x + 6.9

Reorder the terms:
-16 + 3x = 6.9 + 8x

Solving
-16 + 3x = 6.9 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
-16 + 3x + -8x = 6.9 + 8x + -8x

Combine like terms: 3x + -8x = -5x
-16 + -5x = 6.9 + 8x + -8x

Combine like terms: 8x + -8x = 0
-16 + -5x = 6.9 + 0
-16 + -5x = 6.9

Add '16' to each side of the equation.
-16 + 16 + -5x = 6.9 + 16

Combine like terms: -16 + 16 = 0
0 + -5x = 6.9 + 16
-5x = 6.9 + 16

Combine like terms: 6.9 + 16 = 22.9
-5x = 22.9

Divide each side by '-5'.
x = -4.58

Simplifying
x = -4.58

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