a+4(3a+7)=80

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Solution for a+4(3a+7)=80 equation:


Simplifying
a + 4(3a + 7) = 80

Reorder the terms:
a + 4(7 + 3a) = 80
a + (7 * 4 + 3a * 4) = 80
a + (28 + 12a) = 80

Reorder the terms:
28 + a + 12a = 80

Combine like terms: a + 12a = 13a
28 + 13a = 80

Solving
28 + 13a = 80

Solving for variable 'a'.

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

Add '-28' to each side of the equation.
28 + -28 + 13a = 80 + -28

Combine like terms: 28 + -28 = 0
0 + 13a = 80 + -28
13a = 80 + -28

Combine like terms: 80 + -28 = 52
13a = 52

Divide each side by '13'.
a = 4

Simplifying
a = 4

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