x+15=[4x-45]

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Solution for x+15=[4x-45] equation:


Simplifying
x + 15 = [4x + -45]

Reorder the terms:
15 + x = [4x + -45]

Reorder the terms:
15 + x = [-45 + 4x]

Remove brackets around [-45 + 4x]
15 + x = -45 + 4x

Solving
15 + x = -45 + 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 + x + -4x = -45 + 4x + -4x

Combine like terms: x + -4x = -3x
15 + -3x = -45 + 4x + -4x

Combine like terms: 4x + -4x = 0
15 + -3x = -45 + 0
15 + -3x = -45

Add '-15' to each side of the equation.
15 + -15 + -3x = -45 + -15

Combine like terms: 15 + -15 = 0
0 + -3x = -45 + -15
-3x = -45 + -15

Combine like terms: -45 + -15 = -60
-3x = -60

Divide each side by '-3'.
x = 20

Simplifying
x = 20

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