3x-5-7=15

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Solution for 3x-5-7=15 equation:


Simplifying
3x + -5 + -7 = 15

Reorder the terms:
-5 + -7 + 3x = 15

Combine like terms: -5 + -7 = -12
-12 + 3x = 15

Solving
-12 + 3x = 15

Solving for variable 'x'.

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

Add '12' to each side of the equation.
-12 + 12 + 3x = 15 + 12

Combine like terms: -12 + 12 = 0
0 + 3x = 15 + 12
3x = 15 + 12

Combine like terms: 15 + 12 = 27
3x = 27

Divide each side by '3'.
x = 9

Simplifying
x = 9

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