5X-(X-6)=90

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Solution for 5X-(X-6)=90 equation:


Simplifying
5X + -1(X + -6) = 90

Reorder the terms:
5X + -1(-6 + X) = 90
5X + (-6 * -1 + X * -1) = 90
5X + (6 + -1X) = 90

Reorder the terms:
6 + 5X + -1X = 90

Combine like terms: 5X + -1X = 4X
6 + 4X = 90

Solving
6 + 4X = 90

Solving for variable 'X'.

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

Add '-6' to each side of the equation.
6 + -6 + 4X = 90 + -6

Combine like terms: 6 + -6 = 0
0 + 4X = 90 + -6
4X = 90 + -6

Combine like terms: 90 + -6 = 84
4X = 84

Divide each side by '4'.
X = 21

Simplifying
X = 21

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