3(e+1)=21

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Solution for 3(e+1)=21 equation: 


Simplifying
3(e + 1) = 21

Reorder the terms:
3(1 + e) = 21
(1 * 3 + e * 3) = 21
(3 + 3e) = 21

Solving
3 + 3e = 21

Solving for variable 'e'.

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

Add '-3' to each side of the equation.
3 + -3 + 3e = 21 + -3

Combine like terms: 3 + -3 = 0
0 + 3e = 21 + -3
3e = 21 + -3

Combine like terms: 21 + -3 = 18
3e = 18

Divide each side by '3'.
e = 6

Simplifying
e = 6

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