7(a+8)+13=4(a-7)

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Solution for 7(a+8)+13=4(a-7) equation:


Simplifying
7(a + 8) + 13 = 4(a + -7)

Reorder the terms:
7(8 + a) + 13 = 4(a + -7)
(8 * 7 + a * 7) + 13 = 4(a + -7)
(56 + 7a) + 13 = 4(a + -7)

Reorder the terms:
56 + 13 + 7a = 4(a + -7)

Combine like terms: 56 + 13 = 69
69 + 7a = 4(a + -7)

Reorder the terms:
69 + 7a = 4(-7 + a)
69 + 7a = (-7 * 4 + a * 4)
69 + 7a = (-28 + 4a)

Solving
69 + 7a = -28 + 4a

Solving for variable 'a'.

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

Add '-4a' to each side of the equation.
69 + 7a + -4a = -28 + 4a + -4a

Combine like terms: 7a + -4a = 3a
69 + 3a = -28 + 4a + -4a

Combine like terms: 4a + -4a = 0
69 + 3a = -28 + 0
69 + 3a = -28

Add '-69' to each side of the equation.
69 + -69 + 3a = -28 + -69

Combine like terms: 69 + -69 = 0
0 + 3a = -28 + -69
3a = -28 + -69

Combine like terms: -28 + -69 = -97
3a = -97

Divide each side by '3'.
a = -32.33333333

Simplifying
a = -32.33333333

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