7x-3-4x=15

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Solution for 7x-3-4x=15 equation:


Simplifying
7x + -3 + -4x = 15

Reorder the terms:
-3 + 7x + -4x = 15

Combine like terms: 7x + -4x = 3x
-3 + 3x = 15

Solving
-3 + 3x = 15

Solving for variable 'x'.

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

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

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

Combine like terms: 15 + 3 = 18
3x = 18

Divide each side by '3'.
x = 6

Simplifying
x = 6

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