4[x-5]=20

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


Simplifying
4[x + -5] = 20

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

Solving
-20 + 4x = 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 + 4x = 20 + 20

Combine like terms: -20 + 20 = 0
0 + 4x = 20 + 20
4x = 20 + 20

Combine like terms: 20 + 20 = 40
4x = 40

Divide each side by '4'.
x = 10

Simplifying
x = 10

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