7x+21-6x=-18

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Solution for 7x+21-6x=-18 equation:


Simplifying
7x + 21 + -6x = -18

Reorder the terms:
21 + 7x + -6x = -18

Combine like terms: 7x + -6x = 1x
21 + 1x = -18

Solving
21 + 1x = -18

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + 1x = -18 + -21

Combine like terms: 21 + -21 = 0
0 + 1x = -18 + -21
1x = -18 + -21

Combine like terms: -18 + -21 = -39
1x = -39

Divide each side by '1'.
x = -39

Simplifying
x = -39

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