18-15=3x-20

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Solution for 18-15=3x-20 equation:


Simplifying
18 + -15 = 3x + -20

Combine like terms: 18 + -15 = 3
3 = 3x + -20

Reorder the terms:
3 = -20 + 3x

Solving
3 = -20 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
3 + -3x = -20 + 3x + -3x

Combine like terms: 3x + -3x = 0
3 + -3x = -20 + 0
3 + -3x = -20

Add '-3' to each side of the equation.
3 + -3 + -3x = -20 + -3

Combine like terms: 3 + -3 = 0
0 + -3x = -20 + -3
-3x = -20 + -3

Combine like terms: -20 + -3 = -23
-3x = -23

Divide each side by '-3'.
x = 7.666666667

Simplifying
x = 7.666666667

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