-6+8x+7x=-21

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Solution for -6+8x+7x=-21 equation: 


Simplifying
-6 + 8x + 7x = -21

Combine like terms: 8x + 7x = 15x
-6 + 15x = -21

Solving
-6 + 15x = -21

Solving for variable 'x'.

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

Add '6' to each side of the equation.
-6 + 6 + 15x = -21 + 6

Combine like terms: -6 + 6 = 0
0 + 15x = -21 + 6
15x = -21 + 6

Combine like terms: -21 + 6 = -15
15x = -15

Divide each side by '15'.
x = -1

Simplifying
x = -1

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