(15)+(x+18)=4x+9

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Solution for (15)+(x+18)=4x+9 equation:


Simplifying
(15) + (x + 18) = 4x + 9
15 + (x + 18) = 4x + 9

Reorder the terms:
15 + (18 + x) = 4x + 9

Remove parenthesis around (18 + x)
15 + 18 + x = 4x + 9

Combine like terms: 15 + 18 = 33
33 + x = 4x + 9

Reorder the terms:
33 + x = 9 + 4x

Solving
33 + x = 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.
33 + x + -4x = 9 + 4x + -4x

Combine like terms: x + -4x = -3x
33 + -3x = 9 + 4x + -4x

Combine like terms: 4x + -4x = 0
33 + -3x = 9 + 0
33 + -3x = 9

Add '-33' to each side of the equation.
33 + -33 + -3x = 9 + -33

Combine like terms: 33 + -33 = 0
0 + -3x = 9 + -33
-3x = 9 + -33

Combine like terms: 9 + -33 = -24
-3x = -24

Divide each side by '-3'.
x = 8

Simplifying
x = 8

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