15x+20=18x-1

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Solution for 15x+20=18x-1 equation:


Simplifying
15x + 20 = 18x + -1

Reorder the terms:
20 + 15x = 18x + -1

Reorder the terms:
20 + 15x = -1 + 18x

Solving
20 + 15x = -1 + 18x

Solving for variable 'x'.

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

Add '-18x' to each side of the equation.
20 + 15x + -18x = -1 + 18x + -18x

Combine like terms: 15x + -18x = -3x
20 + -3x = -1 + 18x + -18x

Combine like terms: 18x + -18x = 0
20 + -3x = -1 + 0
20 + -3x = -1

Add '-20' to each side of the equation.
20 + -20 + -3x = -1 + -20

Combine like terms: 20 + -20 = 0
0 + -3x = -1 + -20
-3x = -1 + -20

Combine like terms: -1 + -20 = -21
-3x = -21

Divide each side by '-3'.
x = 7

Simplifying
x = 7

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