-28+6a=6a-7(a-4)

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Solution for -28+6a=6a-7(a-4) equation:


Simplifying
-28 + 6a = 6a + -7(a + -4)

Reorder the terms:
-28 + 6a = 6a + -7(-4 + a)
-28 + 6a = 6a + (-4 * -7 + a * -7)
-28 + 6a = 6a + (28 + -7a)

Reorder the terms:
-28 + 6a = 28 + 6a + -7a

Combine like terms: 6a + -7a = -1a
-28 + 6a = 28 + -1a

Solving
-28 + 6a = 28 + -1a

Solving for variable 'a'.

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

Add 'a' to each side of the equation.
-28 + 6a + a = 28 + -1a + a

Combine like terms: 6a + a = 7a
-28 + 7a = 28 + -1a + a

Combine like terms: -1a + a = 0
-28 + 7a = 28 + 0
-28 + 7a = 28

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

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

Combine like terms: 28 + 28 = 56
7a = 56

Divide each side by '7'.
a = 8

Simplifying
a = 8

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