7x-2x-5=15

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Solution for 7x-2x-5=15 equation: 


Simplifying
7x + -2x + -5 = 15

Reorder the terms:
-5 + 7x + -2x = 15

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

Solving
-5 + 5x = 15

Solving for variable 'x'.

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

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

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

Combine like terms: 15 + 5 = 20
5x = 20

Divide each side by '5'.
x = 4

Simplifying
x = 4

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