4[e-3]=20

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Solution for 4[e-3]=20 equation: 


Simplifying
4[e + -3] = 20

Reorder the terms:
4[-3 + e] = 20
[-3 * 4 + e * 4] = 20
[-12 + 4e] = 20

Solving
-12 + 4e = 20

Solving for variable 'e'.

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

Add '12' to each side of the equation.
-12 + 12 + 4e = 20 + 12

Combine like terms: -12 + 12 = 0
0 + 4e = 20 + 12
4e = 20 + 12

Combine like terms: 20 + 12 = 32
4e = 32

Divide each side by '4'.
e = 8

Simplifying
e = 8

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