3a+4=5a-12

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Solution for 3a+4=5a-12 equation:


Simplifying
3a + 4 = 5a + -12

Reorder the terms:
4 + 3a = 5a + -12

Reorder the terms:
4 + 3a = -12 + 5a

Solving
4 + 3a = -12 + 5a

Solving for variable 'a'.

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

Add '-5a' to each side of the equation.
4 + 3a + -5a = -12 + 5a + -5a

Combine like terms: 3a + -5a = -2a
4 + -2a = -12 + 5a + -5a

Combine like terms: 5a + -5a = 0
4 + -2a = -12 + 0
4 + -2a = -12

Add '-4' to each side of the equation.
4 + -4 + -2a = -12 + -4

Combine like terms: 4 + -4 = 0
0 + -2a = -12 + -4
-2a = -12 + -4

Combine like terms: -12 + -4 = -16
-2a = -16

Divide each side by '-2'.
a = 8

Simplifying
a = 8

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