3+8x-4-2x=9+12

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Solution for 3+8x-4-2x=9+12 equation: 


Simplifying
3 + 8x + -4 + -2x = 9 + 12

Reorder the terms:
3 + -4 + 8x + -2x = 9 + 12

Combine like terms: 3 + -4 = -1
-1 + 8x + -2x = 9 + 12

Combine like terms: 8x + -2x = 6x
-1 + 6x = 9 + 12

Combine like terms: 9 + 12 = 21
-1 + 6x = 21

Solving
-1 + 6x = 21

Solving for variable 'x'.

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

Add '1' to each side of the equation.
-1 + 1 + 6x = 21 + 1

Combine like terms: -1 + 1 = 0
0 + 6x = 21 + 1
6x = 21 + 1

Combine like terms: 21 + 1 = 22
6x = 22

Divide each side by '6'.
x = 3.666666667

Simplifying
x = 3.666666667

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