8x-9+21x+4=12

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Solution for 8x-9+21x+4=12 equation:


Simplifying
8x + -9 + 21x + 4 = 12

Reorder the terms:
-9 + 4 + 8x + 21x = 12

Combine like terms: -9 + 4 = -5
-5 + 8x + 21x = 12

Combine like terms: 8x + 21x = 29x
-5 + 29x = 12

Solving
-5 + 29x = 12

Solving for variable 'x'.

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

Add '5' to each side of the equation.
-5 + 5 + 29x = 12 + 5

Combine like terms: -5 + 5 = 0
0 + 29x = 12 + 5
29x = 12 + 5

Combine like terms: 12 + 5 = 17
29x = 17

Divide each side by '29'.
x = 0.5862068966

Simplifying
x = 0.5862068966

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