7e+21=-21

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Solution for 7e+21=-21 equation: 


Simplifying
7e + 21 = -21

Reorder the terms:
21 + 7e = -21

Solving
21 + 7e = -21

Solving for variable 'e'.

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

Add '-21' to each side of the equation.
21 + -21 + 7e = -21 + -21

Combine like terms: 21 + -21 = 0
0 + 7e = -21 + -21
7e = -21 + -21

Combine like terms: -21 + -21 = -42
7e = -42

Divide each side by '7'.
e = -6

Simplifying
e = -6

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