7(10a+8)-2(a-5)=-70

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Solution for 7(10a+8)-2(a-5)=-70 equation:


Simplifying
7(10a + 8) + -2(a + -5) = -70

Reorder the terms:
7(8 + 10a) + -2(a + -5) = -70
(8 * 7 + 10a * 7) + -2(a + -5) = -70
(56 + 70a) + -2(a + -5) = -70

Reorder the terms:
56 + 70a + -2(-5 + a) = -70
56 + 70a + (-5 * -2 + a * -2) = -70
56 + 70a + (10 + -2a) = -70

Reorder the terms:
56 + 10 + 70a + -2a = -70

Combine like terms: 56 + 10 = 66
66 + 70a + -2a = -70

Combine like terms: 70a + -2a = 68a
66 + 68a = -70

Solving
66 + 68a = -70

Solving for variable 'a'.

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

Add '-66' to each side of the equation.
66 + -66 + 68a = -70 + -66

Combine like terms: 66 + -66 = 0
0 + 68a = -70 + -66
68a = -70 + -66

Combine like terms: -70 + -66 = -136
68a = -136

Divide each side by '68'.
a = -2

Simplifying
a = -2

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