50-x+9x-40=90

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Solution for 50-x+9x-40=90 equation:


Simplifying
50 + -1x + 9x + -40 = 90

Reorder the terms:
50 + -40 + -1x + 9x = 90

Combine like terms: 50 + -40 = 10
10 + -1x + 9x = 90

Combine like terms: -1x + 9x = 8x
10 + 8x = 90

Solving
10 + 8x = 90

Solving for variable 'x'.

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

Add '-10' to each side of the equation.
10 + -10 + 8x = 90 + -10

Combine like terms: 10 + -10 = 0
0 + 8x = 90 + -10
8x = 90 + -10

Combine like terms: 90 + -10 = 80
8x = 80

Divide each side by '8'.
x = 10

Simplifying
x = 10

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