225=-7x+15

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Solution for 225=-7x+15 equation:


Simplifying
225 = -7x + 15

Reorder the terms:
225 = 15 + -7x

Solving
225 = 15 + -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.
225 + 7x = 15 + -7x + 7x

Combine like terms: -7x + 7x = 0
225 + 7x = 15 + 0
225 + 7x = 15

Add '-225' to each side of the equation.
225 + -225 + 7x = 15 + -225

Combine like terms: 225 + -225 = 0
0 + 7x = 15 + -225
7x = 15 + -225

Combine like terms: 15 + -225 = -210
7x = -210

Divide each side by '7'.
x = -30

Simplifying
x = -30

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