18-7x=20.5

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Solution for 18-7x=20.5 equation: 


Simplifying
18 + -7x = 20.5

Solving
18 + -7x = 20.5

Solving for variable 'x'.

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

Add '-18' to each side of the equation.
18 + -18 + -7x = 20.5 + -18

Combine like terms: 18 + -18 = 0
0 + -7x = 20.5 + -18
-7x = 20.5 + -18

Combine like terms: 20.5 + -18 = 2.5
-7x = 2.5

Divide each side by '-7'.
x = -0.3571428571

Simplifying
x = -0.3571428571

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