-28=-7+3(a+6)

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Solution for -28=-7+3(a+6) equation:


Simplifying
-28 = -7 + 3(a + 6)

Reorder the terms:
-28 = -7 + 3(6 + a)
-28 = -7 + (6 * 3 + a * 3)
-28 = -7 + (18 + 3a)

Combine like terms: -7 + 18 = 11
-28 = 11 + 3a

Solving
-28 = 11 + 3a

Solving for variable 'a'.

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

Add '-3a' to each side of the equation.
-28 + -3a = 11 + 3a + -3a

Combine like terms: 3a + -3a = 0
-28 + -3a = 11 + 0
-28 + -3a = 11

Add '28' to each side of the equation.
-28 + 28 + -3a = 11 + 28

Combine like terms: -28 + 28 = 0
0 + -3a = 11 + 28
-3a = 11 + 28

Combine like terms: 11 + 28 = 39
-3a = 39

Divide each side by '-3'.
a = -13

Simplifying
a = -13

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