7x-4+3x+12=30

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Solution for 7x-4+3x+12=30 equation:


Simplifying
7x + -4 + 3x + 12 = 30

Reorder the terms:
-4 + 12 + 7x + 3x = 30

Combine like terms: -4 + 12 = 8
8 + 7x + 3x = 30

Combine like terms: 7x + 3x = 10x
8 + 10x = 30

Solving
8 + 10x = 30

Solving for variable 'x'.

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

Add '-8' to each side of the equation.
8 + -8 + 10x = 30 + -8

Combine like terms: 8 + -8 = 0
0 + 10x = 30 + -8
10x = 30 + -8

Combine like terms: 30 + -8 = 22
10x = 22

Divide each side by '10'.
x = 2.2

Simplifying
x = 2.2

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