8x+9x-21=-12-16

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Solution for 8x+9x-21=-12-16 equation:


Simplifying
8x + 9x + -21 = -12 + -16

Reorder the terms:
-21 + 8x + 9x = -12 + -16

Combine like terms: 8x + 9x = 17x
-21 + 17x = -12 + -16

Combine like terms: -12 + -16 = -28
-21 + 17x = -28

Solving
-21 + 17x = -28

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 + 17x = -28 + 21

Combine like terms: -21 + 21 = 0
0 + 17x = -28 + 21
17x = -28 + 21

Combine like terms: -28 + 21 = -7
17x = -7

Divide each side by '17'.
x = -0.4117647059

Simplifying
x = -0.4117647059

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