-80=-3-7(1+5a)

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Solution for -80=-3-7(1+5a) equation:


Simplifying
-80 = -3 + -7(1 + 5a)
-80 = -3 + (1 * -7 + 5a * -7)
-80 = -3 + (-7 + -35a)

Combine like terms: -3 + -7 = -10
-80 = -10 + -35a

Solving
-80 = -10 + -35a

Solving for variable 'a'.

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

Add '35a' to each side of the equation.
-80 + 35a = -10 + -35a + 35a

Combine like terms: -35a + 35a = 0
-80 + 35a = -10 + 0
-80 + 35a = -10

Add '80' to each side of the equation.
-80 + 80 + 35a = -10 + 80

Combine like terms: -80 + 80 = 0
0 + 35a = -10 + 80
35a = -10 + 80

Combine like terms: -10 + 80 = 70
35a = 70

Divide each side by '35'.
a = 2

Simplifying
a = 2

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