15*3-x=115

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Solution for 15*3-x=115 equation: 


Simplifying
15 * 3 + -1x = 115

Multiply 15 * 3
45 + -1x = 115

Solving
45 + -1x = 115

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 + -1x = 115 + -45

Combine like terms: 45 + -45 = 0
0 + -1x = 115 + -45
-1x = 115 + -45

Combine like terms: 115 + -45 = 70
-1x = 70

Divide each side by '-1'.
x = -70

Simplifying
x = -70

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