7(3+7a)-8=-28+8a

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Solution for 7(3+7a)-8=-28+8a equation:


Simplifying
7(3 + 7a) + -8 = -28 + 8a
(3 * 7 + 7a * 7) + -8 = -28 + 8a
(21 + 49a) + -8 = -28 + 8a

Reorder the terms:
21 + -8 + 49a = -28 + 8a

Combine like terms: 21 + -8 = 13
13 + 49a = -28 + 8a

Solving
13 + 49a = -28 + 8a

Solving for variable 'a'.

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

Add '-8a' to each side of the equation.
13 + 49a + -8a = -28 + 8a + -8a

Combine like terms: 49a + -8a = 41a
13 + 41a = -28 + 8a + -8a

Combine like terms: 8a + -8a = 0
13 + 41a = -28 + 0
13 + 41a = -28

Add '-13' to each side of the equation.
13 + -13 + 41a = -28 + -13

Combine like terms: 13 + -13 = 0
0 + 41a = -28 + -13
41a = -28 + -13

Combine like terms: -28 + -13 = -41
41a = -41

Divide each side by '41'.
a = -1

Simplifying
a = -1

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