3X+45-x=90

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Solution for 3X+45-x=90 equation:


Simplifying
3X + 45 + -1x = 90

Reorder the terms:
45 + 3X + -1x = 90

Solving
45 + 3X + -1x = 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 + 3X + -45 + -1x = 90 + -45

Reorder the terms:
45 + -45 + 3X + -1x = 90 + -45

Combine like terms: 45 + -45 = 0
0 + 3X + -1x = 90 + -45
3X + -1x = 90 + -45

Combine like terms: 90 + -45 = 45
3X + -1x = 45

Add 'x' to each side of the equation.
3X + -1x + x = 45 + x

Combine like terms: -1x + x = 0
3X + 0 = 45 + x
3X = 45 + x

Divide each side by '3'.
X = 15 + 0.3333333333x

Simplifying
X = 15 + 0.3333333333x

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