12x-13=21-4

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Solution for 12x-13=21-4 equation:


Simplifying
12x + -13 = 21 + -4

Reorder the terms:
-13 + 12x = 21 + -4

Combine like terms: 21 + -4 = 17
-13 + 12x = 17

Solving
-13 + 12x = 17

Solving for variable 'x'.

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

Add '13' to each side of the equation.
-13 + 13 + 12x = 17 + 13

Combine like terms: -13 + 13 = 0
0 + 12x = 17 + 13
12x = 17 + 13

Combine like terms: 17 + 13 = 30
12x = 30

Divide each side by '12'.
x = 2.5

Simplifying
x = 2.5

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