7e-4=31

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Solution for 7e-4=31 equation: 


Simplifying
7e + -4 = 31

Reorder the terms:
-4 + 7e = 31

Solving
-4 + 7e = 31

Solving for variable 'e'.

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

Add '4' to each side of the equation.
-4 + 4 + 7e = 31 + 4

Combine like terms: -4 + 4 = 0
0 + 7e = 31 + 4
7e = 31 + 4

Combine like terms: 31 + 4 = 35
7e = 35

Divide each side by '7'.
e = 5

Simplifying
e = 5

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