7x-2x-15=9-15

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Solution for 7x-2x-15=9-15 equation:


Simplifying
7x + -2x + -15 = 9 + -15

Reorder the terms:
-15 + 7x + -2x = 9 + -15

Combine like terms: 7x + -2x = 5x
-15 + 5x = 9 + -15

Combine like terms: 9 + -15 = -6
-15 + 5x = -6

Solving
-15 + 5x = -6

Solving for variable 'x'.

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

Add '15' to each side of the equation.
-15 + 15 + 5x = -6 + 15

Combine like terms: -15 + 15 = 0
0 + 5x = -6 + 15
5x = -6 + 15

Combine like terms: -6 + 15 = 9
5x = 9

Divide each side by '5'.
x = 1.8

Simplifying
x = 1.8

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