-21-2e=7e-3

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Solution for -21-2e=7e-3 equation:


Simplifying
-21 + -2e = 7e + -3

Reorder the terms:
-21 + -2e = -3 + 7e

Solving
-21 + -2e = -3 + 7e

Solving for variable 'e'.

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

Add '-7e' to each side of the equation.
-21 + -2e + -7e = -3 + 7e + -7e

Combine like terms: -2e + -7e = -9e
-21 + -9e = -3 + 7e + -7e

Combine like terms: 7e + -7e = 0
-21 + -9e = -3 + 0
-21 + -9e = -3

Add '21' to each side of the equation.
-21 + 21 + -9e = -3 + 21

Combine like terms: -21 + 21 = 0
0 + -9e = -3 + 21
-9e = -3 + 21

Combine like terms: -3 + 21 = 18
-9e = 18

Divide each side by '-9'.
e = -2

Simplifying
e = -2

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