7X+3=9X-12

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Solution for 7X+3=9X-12 equation: 


Simplifying
7X + 3 = 9X + -12

Reorder the terms:
3 + 7X = 9X + -12

Reorder the terms:
3 + 7X = -12 + 9X

Solving
3 + 7X = -12 + 9X

Solving for variable 'X'.

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

Add '-9X' to each side of the equation.
3 + 7X + -9X = -12 + 9X + -9X

Combine like terms: 7X + -9X = -2X
3 + -2X = -12 + 9X + -9X

Combine like terms: 9X + -9X = 0
3 + -2X = -12 + 0
3 + -2X = -12

Add '-3' to each side of the equation.
3 + -3 + -2X = -12 + -3

Combine like terms: 3 + -3 = 0
0 + -2X = -12 + -3
-2X = -12 + -3

Combine like terms: -12 + -3 = -15
-2X = -15

Divide each side by '-2'.
X = 7.5

Simplifying
X = 7.5

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