12=-3e+9

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Solution for 12=-3e+9 equation:


Simplifying
12 = -3e + 9

Reorder the terms:
12 = 9 + -3e

Solving
12 = 9 + -3e

Solving for variable 'e'.

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

Add '3e' to each side of the equation.
12 + 3e = 9 + -3e + 3e

Combine like terms: -3e + 3e = 0
12 + 3e = 9 + 0
12 + 3e = 9

Add '-12' to each side of the equation.
12 + -12 + 3e = 9 + -12

Combine like terms: 12 + -12 = 0
0 + 3e = 9 + -12
3e = 9 + -12

Combine like terms: 9 + -12 = -3
3e = -3

Divide each side by '3'.
e = -1

Simplifying
e = -1

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