115-3x=100

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Solution for 115-3x=100 equation: 


Simplifying
115 + -3x = 100

Solving
115 + -3x = 100

Solving for variable 'x'.

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

Add '-115' to each side of the equation.
115 + -115 + -3x = 100 + -115

Combine like terms: 115 + -115 = 0
0 + -3x = 100 + -115
-3x = 100 + -115

Combine like terms: 100 + -115 = -15
-3x = -15

Divide each side by '-3'.
x = 5

Simplifying
x = 5

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