7a-4=3a-12

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Solution for 7a-4=3a-12 equation:


Simplifying
7a + -4 = 3a + -12

Reorder the terms:
-4 + 7a = 3a + -12

Reorder the terms:
-4 + 7a = -12 + 3a

Solving
-4 + 7a = -12 + 3a

Solving for variable 'a'.

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

Add '-3a' to each side of the equation.
-4 + 7a + -3a = -12 + 3a + -3a

Combine like terms: 7a + -3a = 4a
-4 + 4a = -12 + 3a + -3a

Combine like terms: 3a + -3a = 0
-4 + 4a = -12 + 0
-4 + 4a = -12

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

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

Combine like terms: -12 + 4 = -8
4a = -8

Divide each side by '4'.
a = -2

Simplifying
a = -2

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