3x-15=4x+20

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


Simplifying
3x + -15 = 4x + 20

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

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

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

Combine like terms: 3x + -4x = -1x
-15 + -1x = 20 + 4x + -4x

Combine like terms: 4x + -4x = 0
-15 + -1x = 20 + 0
-15 + -1x = 20

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

Combine like terms: -15 + 15 = 0
0 + -1x = 20 + 15
-1x = 20 + 15

Combine like terms: 20 + 15 = 35
-1x = 35

Divide each side by '-1'.
x = -35

Simplifying
x = -35

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