4(7a+5)+7(a+7)=-71

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Solution for 4(7a+5)+7(a+7)=-71 equation:


Simplifying
4(7a + 5) + 7(a + 7) = -71

Reorder the terms:
4(5 + 7a) + 7(a + 7) = -71
(5 * 4 + 7a * 4) + 7(a + 7) = -71
(20 + 28a) + 7(a + 7) = -71

Reorder the terms:
20 + 28a + 7(7 + a) = -71
20 + 28a + (7 * 7 + a * 7) = -71
20 + 28a + (49 + 7a) = -71

Reorder the terms:
20 + 49 + 28a + 7a = -71

Combine like terms: 20 + 49 = 69
69 + 28a + 7a = -71

Combine like terms: 28a + 7a = 35a
69 + 35a = -71

Solving
69 + 35a = -71

Solving for variable 'a'.

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

Add '-69' to each side of the equation.
69 + -69 + 35a = -71 + -69

Combine like terms: 69 + -69 = 0
0 + 35a = -71 + -69
35a = -71 + -69

Combine like terms: -71 + -69 = -140
35a = -140

Divide each side by '35'.
a = -4

Simplifying
a = -4

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