7(a+9)-(a+7)=24

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Solution for 7(a+9)-(a+7)=24 equation:


Simplifying
7(a + 9) + -1(a + 7) = 24

Reorder the terms:
7(9 + a) + -1(a + 7) = 24
(9 * 7 + a * 7) + -1(a + 7) = 24
(63 + 7a) + -1(a + 7) = 24

Reorder the terms:
63 + 7a + -1(7 + a) = 24
63 + 7a + (7 * -1 + a * -1) = 24
63 + 7a + (-7 + -1a) = 24

Reorder the terms:
63 + -7 + 7a + -1a = 24

Combine like terms: 63 + -7 = 56
56 + 7a + -1a = 24

Combine like terms: 7a + -1a = 6a
56 + 6a = 24

Solving
56 + 6a = 24

Solving for variable 'a'.

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

Add '-56' to each side of the equation.
56 + -56 + 6a = 24 + -56

Combine like terms: 56 + -56 = 0
0 + 6a = 24 + -56
6a = 24 + -56

Combine like terms: 24 + -56 = -32
6a = -32

Divide each side by '6'.
a = -5.333333333

Simplifying
a = -5.333333333

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