7a-7=12(a-4)

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Solution for 7a-7=12(a-4) equation:


Simplifying
7a + -7 = 12(a + -4)

Reorder the terms:
-7 + 7a = 12(a + -4)

Reorder the terms:
-7 + 7a = 12(-4 + a)
-7 + 7a = (-4 * 12 + a * 12)
-7 + 7a = (-48 + 12a)

Solving
-7 + 7a = -48 + 12a

Solving for variable 'a'.

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

Add '-12a' to each side of the equation.
-7 + 7a + -12a = -48 + 12a + -12a

Combine like terms: 7a + -12a = -5a
-7 + -5a = -48 + 12a + -12a

Combine like terms: 12a + -12a = 0
-7 + -5a = -48 + 0
-7 + -5a = -48

Add '7' to each side of the equation.
-7 + 7 + -5a = -48 + 7

Combine like terms: -7 + 7 = 0
0 + -5a = -48 + 7
-5a = -48 + 7

Combine like terms: -48 + 7 = -41
-5a = -41

Divide each side by '-5'.
a = 8.2

Simplifying
a = 8.2

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