4x-15+5x-6=15

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Solution for 4x-15+5x-6=15 equation:


Simplifying
4x + -15 + 5x + -6 = 15

Reorder the terms:
-15 + -6 + 4x + 5x = 15

Combine like terms: -15 + -6 = -21
-21 + 4x + 5x = 15

Combine like terms: 4x + 5x = 9x
-21 + 9x = 15

Solving
-21 + 9x = 15

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + 9x = 15 + 21

Combine like terms: -21 + 21 = 0
0 + 9x = 15 + 21
9x = 15 + 21

Combine like terms: 15 + 21 = 36
9x = 36

Divide each side by '9'.
x = 4

Simplifying
x = 4

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