7e+5f-21=9

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Solution for 7e+5f-21=9 equation: 


Simplifying
7e + 5f + -21 = 9

Reorder the terms:
-21 + 7e + 5f = 9

Solving
-21 + 7e + 5f = 9

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 + 7e + 21 + 5f = 9 + 21

Reorder the terms:
-21 + 21 + 7e + 5f = 9 + 21

Combine like terms: -21 + 21 = 0
0 + 7e + 5f = 9 + 21
7e + 5f = 9 + 21

Combine like terms: 9 + 21 = 30
7e + 5f = 30

Add '-5f' to each side of the equation.
7e + 5f + -5f = 30 + -5f

Combine like terms: 5f + -5f = 0
7e + 0 = 30 + -5f
7e = 30 + -5f

Divide each side by '7'.
e = 4.285714286 + -0.7142857143f

Simplifying
e = 4.285714286 + -0.7142857143f

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