3+(2x+18)=5x-15

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Solution for 3+(2x+18)=5x-15 equation:


Simplifying
3 + (2x + 18) = 5x + -15

Reorder the terms:
3 + (18 + 2x) = 5x + -15

Remove parenthesis around (18 + 2x)
3 + 18 + 2x = 5x + -15

Combine like terms: 3 + 18 = 21
21 + 2x = 5x + -15

Reorder the terms:
21 + 2x = -15 + 5x

Solving
21 + 2x = -15 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
21 + 2x + -5x = -15 + 5x + -5x

Combine like terms: 2x + -5x = -3x
21 + -3x = -15 + 5x + -5x

Combine like terms: 5x + -5x = 0
21 + -3x = -15 + 0
21 + -3x = -15

Add '-21' to each side of the equation.
21 + -21 + -3x = -15 + -21

Combine like terms: 21 + -21 = 0
0 + -3x = -15 + -21
-3x = -15 + -21

Combine like terms: -15 + -21 = -36
-3x = -36

Divide each side by '-3'.
x = 12

Simplifying
x = 12

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