4x-15=7(x-15)

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Solution for 4x-15=7(x-15) equation:


Simplifying
4x + -15 = 7(x + -15)

Reorder the terms:
-15 + 4x = 7(x + -15)

Reorder the terms:
-15 + 4x = 7(-15 + x)
-15 + 4x = (-15 * 7 + x * 7)
-15 + 4x = (-105 + 7x)

Solving
-15 + 4x = -105 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
-15 + 4x + -7x = -105 + 7x + -7x

Combine like terms: 4x + -7x = -3x
-15 + -3x = -105 + 7x + -7x

Combine like terms: 7x + -7x = 0
-15 + -3x = -105 + 0
-15 + -3x = -105

Add '15' to each side of the equation.
-15 + 15 + -3x = -105 + 15

Combine like terms: -15 + 15 = 0
0 + -3x = -105 + 15
-3x = -105 + 15

Combine like terms: -105 + 15 = -90
-3x = -90

Divide each side by '-3'.
x = 30

Simplifying
x = 30

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