13x-28=21x+12

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Solution for 13x-28=21x+12 equation:


Simplifying
13x + -28 = 21x + 12

Reorder the terms:
-28 + 13x = 21x + 12

Reorder the terms:
-28 + 13x = 12 + 21x

Solving
-28 + 13x = 12 + 21x

Solving for variable 'x'.

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

Add '-21x' to each side of the equation.
-28 + 13x + -21x = 12 + 21x + -21x

Combine like terms: 13x + -21x = -8x
-28 + -8x = 12 + 21x + -21x

Combine like terms: 21x + -21x = 0
-28 + -8x = 12 + 0
-28 + -8x = 12

Add '28' to each side of the equation.
-28 + 28 + -8x = 12 + 28

Combine like terms: -28 + 28 = 0
0 + -8x = 12 + 28
-8x = 12 + 28

Combine like terms: 12 + 28 = 40
-8x = 40

Divide each side by '-8'.
x = -5

Simplifying
x = -5

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