20-4x=3x-15

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Solution for 20-4x=3x-15 equation:


Simplifying
20 + -4x = 3x + -15

Reorder the terms:
20 + -4x = -15 + 3x

Solving
20 + -4x = -15 + 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.
20 + -4x + -3x = -15 + 3x + -3x

Combine like terms: -4x + -3x = -7x
20 + -7x = -15 + 3x + -3x

Combine like terms: 3x + -3x = 0
20 + -7x = -15 + 0
20 + -7x = -15

Add '-20' to each side of the equation.
20 + -20 + -7x = -15 + -20

Combine like terms: 20 + -20 = 0
0 + -7x = -15 + -20
-7x = -15 + -20

Combine like terms: -15 + -20 = -35
-7x = -35

Divide each side by '-7'.
x = 5

Simplifying
x = 5

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