7(x-3)=5(x-15)

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Solution for 7(x-3)=5(x-15) equation:


Simplifying
7(x + -3) = 5(x + -15)

Reorder the terms:
7(-3 + x) = 5(x + -15)
(-3 * 7 + x * 7) = 5(x + -15)
(-21 + 7x) = 5(x + -15)

Reorder the terms:
-21 + 7x = 5(-15 + x)
-21 + 7x = (-15 * 5 + x * 5)
-21 + 7x = (-75 + 5x)

Solving
-21 + 7x = -75 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
-21 + 7x + -5x = -75 + 5x + -5x

Combine like terms: 7x + -5x = 2x
-21 + 2x = -75 + 5x + -5x

Combine like terms: 5x + -5x = 0
-21 + 2x = -75 + 0
-21 + 2x = -75

Add '21' to each side of the equation.
-21 + 21 + 2x = -75 + 21

Combine like terms: -21 + 21 = 0
0 + 2x = -75 + 21
2x = -75 + 21

Combine like terms: -75 + 21 = -54
2x = -54

Divide each side by '2'.
x = -27

Simplifying
x = -27

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