20-45=3(x-3)-7

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Solution for 20-45=3(x-3)-7 equation:


Simplifying
20 + -45 = 3(x + -3) + -7

Combine like terms: 20 + -45 = -25
-25 = 3(x + -3) + -7

Reorder the terms:
-25 = 3(-3 + x) + -7
-25 = (-3 * 3 + x * 3) + -7
-25 = (-9 + 3x) + -7

Reorder the terms:
-25 = -9 + -7 + 3x

Combine like terms: -9 + -7 = -16
-25 = -16 + 3x

Solving
-25 = -16 + 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.
-25 + -3x = -16 + 3x + -3x

Combine like terms: 3x + -3x = 0
-25 + -3x = -16 + 0
-25 + -3x = -16

Add '25' to each side of the equation.
-25 + 25 + -3x = -16 + 25

Combine like terms: -25 + 25 = 0
0 + -3x = -16 + 25
-3x = -16 + 25

Combine like terms: -16 + 25 = 9
-3x = 9

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

Simplifying
x = -3

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