(a-1)=3(5+4a)

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Solution for (a-1)=3(5+4a) equation:


Simplifying
(a + -1) = 3(5 + 4a)

Reorder the terms:
(-1 + a) = 3(5 + 4a)

Remove parenthesis around (-1 + a)
-1 + a = 3(5 + 4a)
-1 + a = (5 * 3 + 4a * 3)
-1 + a = (15 + 12a)

Solving
-1 + a = 15 + 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.
-1 + a + -12a = 15 + 12a + -12a

Combine like terms: a + -12a = -11a
-1 + -11a = 15 + 12a + -12a

Combine like terms: 12a + -12a = 0
-1 + -11a = 15 + 0
-1 + -11a = 15

Add '1' to each side of the equation.
-1 + 1 + -11a = 15 + 1

Combine like terms: -1 + 1 = 0
0 + -11a = 15 + 1
-11a = 15 + 1

Combine like terms: 15 + 1 = 16
-11a = 16

Divide each side by '-11'.
a = -1.454545455

Simplifying
a = -1.454545455

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