[20-7x]=8

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Solution for [20-7x]=8 equation: 


Simplifying
[20 + -7x] = 8

Remove brackets around [20 + -7x]
20 + -7x = 8

Solving
20 + -7x = 8

Solving for variable 'x'.

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

Add '-20' to each side of the equation.
20 + -20 + -7x = 8 + -20

Combine like terms: 20 + -20 = 0
0 + -7x = 8 + -20
-7x = 8 + -20

Combine like terms: 8 + -20 = -12
-7x = -12

Divide each side by '-7'.
x = 1.714285714

Simplifying
x = 1.714285714

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