45-3x=90

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Solution for 45-3x=90 equation: 


Simplifying
45 + -3x = 90

Solving
45 + -3x = 90

Solving for variable 'x'.

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

Add '-45' to each side of the equation.
45 + -45 + -3x = 90 + -45

Combine like terms: 45 + -45 = 0
0 + -3x = 90 + -45
-3x = 90 + -45

Combine like terms: 90 + -45 = 45
-3x = 45

Divide each side by '-3'.
x = -15

Simplifying
x = -15

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