12=7X+5-8X+9

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Solution for 12=7X+5-8X+9 equation:


Simplifying
12 = 7X + 5 + -8X + 9

Reorder the terms:
12 = 5 + 9 + 7X + -8X

Combine like terms: 5 + 9 = 14
12 = 14 + 7X + -8X

Combine like terms: 7X + -8X = -1X
12 = 14 + -1X

Solving
12 = 14 + -1X

Solving for variable 'X'.

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

Add 'X' to each side of the equation.
12 + X = 14 + -1X + X

Combine like terms: -1X + X = 0
12 + X = 14 + 0
12 + X = 14

Add '-12' to each side of the equation.
12 + -12 + X = 14 + -12

Combine like terms: 12 + -12 = 0
0 + X = 14 + -12
X = 14 + -12

Combine like terms: 14 + -12 = 2
X = 2

Simplifying
X = 2

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