3a-4=6(a+1)+12a+7

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Solution for 3a-4=6(a+1)+12a+7 equation:


Simplifying
3a + -4 = 6(a + 1) + 12a + 7

Reorder the terms:
-4 + 3a = 6(a + 1) + 12a + 7

Reorder the terms:
-4 + 3a = 6(1 + a) + 12a + 7
-4 + 3a = (1 * 6 + a * 6) + 12a + 7
-4 + 3a = (6 + 6a) + 12a + 7

Reorder the terms:
-4 + 3a = 6 + 7 + 6a + 12a

Combine like terms: 6 + 7 = 13
-4 + 3a = 13 + 6a + 12a

Combine like terms: 6a + 12a = 18a
-4 + 3a = 13 + 18a

Solving
-4 + 3a = 13 + 18a

Solving for variable 'a'.

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

Add '-18a' to each side of the equation.
-4 + 3a + -18a = 13 + 18a + -18a

Combine like terms: 3a + -18a = -15a
-4 + -15a = 13 + 18a + -18a

Combine like terms: 18a + -18a = 0
-4 + -15a = 13 + 0
-4 + -15a = 13

Add '4' to each side of the equation.
-4 + 4 + -15a = 13 + 4

Combine like terms: -4 + 4 = 0
0 + -15a = 13 + 4
-15a = 13 + 4

Combine like terms: 13 + 4 = 17
-15a = 17

Divide each side by '-15'.
a = -1.133333333

Simplifying
a = -1.133333333

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