20=e-8-5-12

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Solution for 20=e-8-5-12 equation:


Simplifying
20 = e + -8 + -5 + -12

Reorder the terms:
20 = -8 + -5 + -12 + e

Combine like terms: -8 + -5 = -13
20 = -13 + -12 + e

Combine like terms: -13 + -12 = -25
20 = -25 + e

Solving
20 = -25 + e

Solving for variable 'e'.

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

Add '-1e' to each side of the equation.
20 + -1e = -25 + e + -1e

Combine like terms: e + -1e = 0
20 + -1e = -25 + 0
20 + -1e = -25

Add '-20' to each side of the equation.
20 + -20 + -1e = -25 + -20

Combine like terms: 20 + -20 = 0
0 + -1e = -25 + -20
-1e = -25 + -20

Combine like terms: -25 + -20 = -45
-1e = -45

Divide each side by '-1'.
e = 45

Simplifying
e = 45

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