-2(3a+1)-(a-5)=-7

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Solution for -2(3a+1)-(a-5)=-7 equation:


Simplifying
-2(3a + 1) + -1(a + -5) = -7

Reorder the terms:
-2(1 + 3a) + -1(a + -5) = -7
(1 * -2 + 3a * -2) + -1(a + -5) = -7
(-2 + -6a) + -1(a + -5) = -7

Reorder the terms:
-2 + -6a + -1(-5 + a) = -7
-2 + -6a + (-5 * -1 + a * -1) = -7
-2 + -6a + (5 + -1a) = -7

Reorder the terms:
-2 + 5 + -6a + -1a = -7

Combine like terms: -2 + 5 = 3
3 + -6a + -1a = -7

Combine like terms: -6a + -1a = -7a
3 + -7a = -7

Solving
3 + -7a = -7

Solving for variable 'a'.

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

Add '-3' to each side of the equation.
3 + -3 + -7a = -7 + -3

Combine like terms: 3 + -3 = 0
0 + -7a = -7 + -3
-7a = -7 + -3

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

Divide each side by '-7'.
a = 1.428571429

Simplifying
a = 1.428571429

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