12-3=3(e-1)

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Solution for 12-3=3(e-1) equation:


Simplifying
12 + -3 = 3(e + -1)

Combine like terms: 12 + -3 = 9
9 = 3(e + -1)

Reorder the terms:
9 = 3(-1 + e)
9 = (-1 * 3 + e * 3)
9 = (-3 + 3e)

Solving
9 = -3 + 3e

Solving for variable 'e'.

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

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

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

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

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

Combine like terms: -3 + -9 = -12
-3e = -12

Divide each side by '-3'.
e = 4

Simplifying
e = 4

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