4(a+3)=18-2(a-2a)

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Solution for 4(a+3)=18-2(a-2a) equation:


Simplifying
4(a + 3) = 18 + -2(a + -2a)

Reorder the terms:
4(3 + a) = 18 + -2(a + -2a)
(3 * 4 + a * 4) = 18 + -2(a + -2a)
(12 + 4a) = 18 + -2(a + -2a)

Combine like terms: a + -2a = -1a
12 + 4a = 18 + -2(-1a)

Remove parenthesis around (-1a)
12 + 4a = 18 + -2 * -1a

Multiply -2 * -1
12 + 4a = 18 + 2a

Solving
12 + 4a = 18 + 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.
12 + 4a + -2a = 18 + 2a + -2a

Combine like terms: 4a + -2a = 2a
12 + 2a = 18 + 2a + -2a

Combine like terms: 2a + -2a = 0
12 + 2a = 18 + 0
12 + 2a = 18

Add '-12' to each side of the equation.
12 + -12 + 2a = 18 + -12

Combine like terms: 12 + -12 = 0
0 + 2a = 18 + -12
2a = 18 + -12

Combine like terms: 18 + -12 = 6
2a = 6

Divide each side by '2'.
a = 3

Simplifying
a = 3

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