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

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


Simplifying
18 + -1a = 4a + -4(a + 3)

Reorder the terms:
18 + -1a = 4a + -4(3 + a)
18 + -1a = 4a + (3 * -4 + a * -4)
18 + -1a = 4a + (-12 + -4a)

Reorder the terms:
18 + -1a = -12 + 4a + -4a

Combine like terms: 4a + -4a = 0
18 + -1a = -12 + 0
18 + -1a = -12

Solving
18 + -1a = -12

Solving for variable 'a'.

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

Add '-18' to each side of the equation.
18 + -18 + -1a = -12 + -18

Combine like terms: 18 + -18 = 0
0 + -1a = -12 + -18
-1a = -12 + -18

Combine like terms: -12 + -18 = -30
-1a = -30

Divide each side by '-1'.
a = 30

Simplifying
a = 30

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