3(a+1)+4=2(a-1)

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Solution for 3(a+1)+4=2(a-1) equation:


Simplifying
3(a + 1) + 4 = 2(a + -1)

Reorder the terms:
3(1 + a) + 4 = 2(a + -1)
(1 * 3 + a * 3) + 4 = 2(a + -1)
(3 + 3a) + 4 = 2(a + -1)

Reorder the terms:
3 + 4 + 3a = 2(a + -1)

Combine like terms: 3 + 4 = 7
7 + 3a = 2(a + -1)

Reorder the terms:
7 + 3a = 2(-1 + a)
7 + 3a = (-1 * 2 + a * 2)
7 + 3a = (-2 + 2a)

Solving
7 + 3a = -2 + 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
7 + 3a + -2a = -2 + 2a + -2a

Combine like terms: 3a + -2a = 1a
7 + 1a = -2 + 2a + -2a

Combine like terms: 2a + -2a = 0
7 + 1a = -2 + 0
7 + 1a = -2

Add '-7' to each side of the equation.
7 + -7 + 1a = -2 + -7

Combine like terms: 7 + -7 = 0
0 + 1a = -2 + -7
1a = -2 + -7

Combine like terms: -2 + -7 = -9
1a = -9

Divide each side by '1'.
a = -9

Simplifying
a = -9

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