5[x-4]=20

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Solution for 5[x-4]=20 equation: 


Simplifying
5[x + -4] = 20

Reorder the terms:
5[-4 + x] = 20
[-4 * 5 + x * 5] = 20
[-20 + 5x] = 20

Solving
-20 + 5x = 20

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 + 5x = 20 + 20

Combine like terms: -20 + 20 = 0
0 + 5x = 20 + 20
5x = 20 + 20

Combine like terms: 20 + 20 = 40
5x = 40

Divide each side by '5'.
x = 8

Simplifying
x = 8

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