72x=90(x-1)

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Solution for 72x=90(x-1) equation: 


Simplifying
72x = 90(x + -1)

Reorder the terms:
72x = 90(-1 + x)
72x = (-1 * 90 + x * 90)
72x = (-90 + 90x)

Solving
72x = -90 + 90x

Solving for variable 'x'.

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

Add '-90x' to each side of the equation.
72x + -90x = -90 + 90x + -90x

Combine like terms: 72x + -90x = -18x
-18x = -90 + 90x + -90x

Combine like terms: 90x + -90x = 0
-18x = -90 + 0
-18x = -90

Divide each side by '-18'.
x = 5

Simplifying
x = 5

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