28+a=-6(a-7)

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


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

Reorder the terms:
28 + a = -6(-7 + a)
28 + a = (-7 * -6 + a * -6)
28 + a = (42 + -6a)

Solving
28 + a = 42 + -6a

Solving for variable 'a'.

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

Add '6a' to each side of the equation.
28 + a + 6a = 42 + -6a + 6a

Combine like terms: a + 6a = 7a
28 + 7a = 42 + -6a + 6a

Combine like terms: -6a + 6a = 0
28 + 7a = 42 + 0
28 + 7a = 42

Add '-28' to each side of the equation.
28 + -28 + 7a = 42 + -28

Combine like terms: 28 + -28 = 0
0 + 7a = 42 + -28
7a = 42 + -28

Combine like terms: 42 + -28 = 14
7a = 14

Divide each side by '7'.
a = 2

Simplifying
a = 2

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