-28=4(5-2a)-2(3+3a)

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Solution for -28=4(5-2a)-2(3+3a) equation:


Simplifying
-28 = 4(5 + -2a) + -2(3 + 3a)
-28 = (5 * 4 + -2a * 4) + -2(3 + 3a)
-28 = (20 + -8a) + -2(3 + 3a)
-28 = 20 + -8a + (3 * -2 + 3a * -2)
-28 = 20 + -8a + (-6 + -6a)

Reorder the terms:
-28 = 20 + -6 + -8a + -6a

Combine like terms: 20 + -6 = 14
-28 = 14 + -8a + -6a

Combine like terms: -8a + -6a = -14a
-28 = 14 + -14a

Solving
-28 = 14 + -14a

Solving for variable 'a'.

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

Add '14a' to each side of the equation.
-28 + 14a = 14 + -14a + 14a

Combine like terms: -14a + 14a = 0
-28 + 14a = 14 + 0
-28 + 14a = 14

Add '28' to each side of the equation.
-28 + 28 + 14a = 14 + 28

Combine like terms: -28 + 28 = 0
0 + 14a = 14 + 28
14a = 14 + 28

Combine like terms: 14 + 28 = 42
14a = 42

Divide each side by '14'.
a = 3

Simplifying
a = 3

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