15=9-4x

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Solution for 15=9-4x equation:


Simplifying
15 = 9 + -4x

Solving
15 = 9 + -4x

Solving for variable 'x'.

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

Add '4x' to each side of the equation.
15 + 4x = 9 + -4x + 4x

Combine like terms: -4x + 4x = 0
15 + 4x = 9 + 0
15 + 4x = 9

Add '-15' to each side of the equation.
15 + -15 + 4x = 9 + -15

Combine like terms: 15 + -15 = 0
0 + 4x = 9 + -15
4x = 9 + -15

Combine like terms: 9 + -15 = -6
4x = -6

Divide each side by '4'.
x = -1.5

Simplifying
x = -1.5

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