12-(-9e)=8-4e

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Solution for 12-(-9e)=8-4e equation:


Simplifying
12 + -1(-9e) = 8 + -4e

Remove parenthesis around (-9e)
12 + -1 * -9e = 8 + -4e

Multiply -1 * -9
12 + 9e = 8 + -4e

Solving
12 + 9e = 8 + -4e

Solving for variable 'e'.

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

Add '4e' to each side of the equation.
12 + 9e + 4e = 8 + -4e + 4e

Combine like terms: 9e + 4e = 13e
12 + 13e = 8 + -4e + 4e

Combine like terms: -4e + 4e = 0
12 + 13e = 8 + 0
12 + 13e = 8

Add '-12' to each side of the equation.
12 + -12 + 13e = 8 + -12

Combine like terms: 12 + -12 = 0
0 + 13e = 8 + -12
13e = 8 + -12

Combine like terms: 8 + -12 = -4
13e = -4

Divide each side by '13'.
e = -0.3076923077

Simplifying
e = -0.3076923077

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