21-8x-4+9x=0

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Solution for 21-8x-4+9x=0 equation:


Simplifying
21 + -8x + -4 + 9x = 0

Reorder the terms:
21 + -4 + -8x + 9x = 0

Combine like terms: 21 + -4 = 17
17 + -8x + 9x = 0

Combine like terms: -8x + 9x = 1x
17 + 1x = 0

Solving
17 + 1x = 0

Solving for variable 'x'.

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

Add '-17' to each side of the equation.
17 + -17 + 1x = 0 + -17

Combine like terms: 17 + -17 = 0
0 + 1x = 0 + -17
1x = 0 + -17

Combine like terms: 0 + -17 = -17
1x = -17

Divide each side by '1'.
x = -17

Simplifying
x = -17

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