(e+5)*3=21

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Solution for (e+5)*3=21 equation:


Simplifying
(e + 5) * 3 = 21

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

Reorder the terms for easier multiplication:
3(5 + e) = 21
(5 * 3 + e * 3) = 21
(15 + 3e) = 21

Solving
15 + 3e = 21

Solving for variable 'e'.

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

Add '-15' to each side of the equation.
15 + -15 + 3e = 21 + -15

Combine like terms: 15 + -15 = 0
0 + 3e = 21 + -15
3e = 21 + -15

Combine like terms: 21 + -15 = 6
3e = 6

Divide each side by '3'.
e = 2

Simplifying
e = 2

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