3x-4+9x=28

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Solution for 3x-4+9x=28 equation:


Simplifying
3x + -4 + 9x = 28

Reorder the terms:
-4 + 3x + 9x = 28

Combine like terms: 3x + 9x = 12x
-4 + 12x = 28

Solving
-4 + 12x = 28

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 + 12x = 28 + 4

Combine like terms: -4 + 4 = 0
0 + 12x = 28 + 4
12x = 28 + 4

Combine like terms: 28 + 4 = 32
12x = 32

Divide each side by '12'.
x = 2.666666667

Simplifying
x = 2.666666667

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