105+x=3x+15

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Solution for 105+x=3x+15 equation:


Simplifying
105 + x = 3x + 15

Reorder the terms:
105 + x = 15 + 3x

Solving
105 + x = 15 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
105 + x + -3x = 15 + 3x + -3x

Combine like terms: x + -3x = -2x
105 + -2x = 15 + 3x + -3x

Combine like terms: 3x + -3x = 0
105 + -2x = 15 + 0
105 + -2x = 15

Add '-105' to each side of the equation.
105 + -105 + -2x = 15 + -105

Combine like terms: 105 + -105 = 0
0 + -2x = 15 + -105
-2x = 15 + -105

Combine like terms: 15 + -105 = -90
-2x = -90

Divide each side by '-2'.
x = 45

Simplifying
x = 45

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