5x+2x-6=15

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Solution for 5x+2x-6=15 equation: 


Simplifying
5x + 2x + -6 = 15

Reorder the terms:
-6 + 5x + 2x = 15

Combine like terms: 5x + 2x = 7x
-6 + 7x = 15

Solving
-6 + 7x = 15

Solving for variable 'x'.

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

Add '6' to each side of the equation.
-6 + 6 + 7x = 15 + 6

Combine like terms: -6 + 6 = 0
0 + 7x = 15 + 6
7x = 15 + 6

Combine like terms: 15 + 6 = 21
7x = 21

Divide each side by '7'.
x = 3

Simplifying
x = 3

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