13=e+4

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Solution for 13=e+4 equation:


Simplifying
13 = e + 4

Reorder the terms:
13 = 4 + e

Solving
13 = 4 + 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.
13 + -1e = 4 + e + -1e

Combine like terms: e + -1e = 0
13 + -1e = 4 + 0
13 + -1e = 4

Add '-13' to each side of the equation.
13 + -13 + -1e = 4 + -13

Combine like terms: 13 + -13 = 0
0 + -1e = 4 + -13
-1e = 4 + -13

Combine like terms: 4 + -13 = -9
-1e = -9

Divide each side by '-1'.
e = 9

Simplifying
e = 9

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