7.5+x=45+3x

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Solution for 7.5+x=45+3x equation:


Simplifying
7.5 + x = 45 + 3x

Solving
7.5 + x = 45 + 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.
7.5 + x + -3x = 45 + 3x + -3x

Combine like terms: x + -3x = -2x
7.5 + -2x = 45 + 3x + -3x

Combine like terms: 3x + -3x = 0
7.5 + -2x = 45 + 0
7.5 + -2x = 45

Add '-7.5' to each side of the equation.
7.5 + -7.5 + -2x = 45 + -7.5

Combine like terms: 7.5 + -7.5 = 0.0
0.0 + -2x = 45 + -7.5
-2x = 45 + -7.5

Combine like terms: 45 + -7.5 = 37.5
-2x = 37.5

Divide each side by '-2'.
x = -18.75

Simplifying
x = -18.75

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