90=(3x-7)+(X+5)

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Solution for 90=(3x-7)+(X+5) equation:


Simplifying
90 = (3x + -7) + (X + 5)

Reorder the terms:
90 = (-7 + 3x) + (X + 5)

Remove parenthesis around (-7 + 3x)
90 = -7 + 3x + (X + 5)

Reorder the terms:
90 = -7 + 3x + (5 + X)

Remove parenthesis around (5 + X)
90 = -7 + 3x + 5 + X

Reorder the terms:
90 = -7 + 5 + X + 3x

Combine like terms: -7 + 5 = -2
90 = -2 + X + 3x

Solving
90 = -2 + X + 3x

Solving for variable 'X'.

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

Add '-1X' to each side of the equation.
90 + -1X = -2 + X + -1X + 3x

Combine like terms: X + -1X = 0
90 + -1X = -2 + 0 + 3x
90 + -1X = -2 + 3x

Add '-90' to each side of the equation.
90 + -90 + -1X = -2 + -90 + 3x

Combine like terms: 90 + -90 = 0
0 + -1X = -2 + -90 + 3x
-1X = -2 + -90 + 3x

Combine like terms: -2 + -90 = -92
-1X = -92 + 3x

Divide each side by '-1'.
X = 92 + -3x

Simplifying
X = 92 + -3x

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