7x-1+2x+4=12

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Solution for 7x-1+2x+4=12 equation:


Simplifying
7x + -1 + 2x + 4 = 12

Reorder the terms:
-1 + 4 + 7x + 2x = 12

Combine like terms: -1 + 4 = 3
3 + 7x + 2x = 12

Combine like terms: 7x + 2x = 9x
3 + 9x = 12

Solving
3 + 9x = 12

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + 9x = 12 + -3

Combine like terms: 3 + -3 = 0
0 + 9x = 12 + -3
9x = 12 + -3

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

Divide each side by '9'.
x = 1

Simplifying
x = 1

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