3x+8(-x)=45

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Solution for 3x+8(-x)=45 equation: 


Simplifying
3x + 8(-1x) = 45

Remove parenthesis around (-1x)
3x + 8 * -1x = 45

Multiply 8 * -1
3x + -8x = 45

Combine like terms: 3x + -8x = -5x
-5x = 45

Solving
-5x = 45

Solving for variable 'x'.

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

Divide each side by '-5'.
x = -9

Simplifying
x = -9

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