-5(3+7a)=-8(a-1)-4a

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Solution for -5(3+7a)=-8(a-1)-4a equation:


Simplifying
-5(3 + 7a) = -8(a + -1) + -4a
(3 * -5 + 7a * -5) = -8(a + -1) + -4a
(-15 + -35a) = -8(a + -1) + -4a

Reorder the terms:
-15 + -35a = -8(-1 + a) + -4a
-15 + -35a = (-1 * -8 + a * -8) + -4a
-15 + -35a = (8 + -8a) + -4a

Combine like terms: -8a + -4a = -12a
-15 + -35a = 8 + -12a

Solving
-15 + -35a = 8 + -12a

Solving for variable 'a'.

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

Add '12a' to each side of the equation.
-15 + -35a + 12a = 8 + -12a + 12a

Combine like terms: -35a + 12a = -23a
-15 + -23a = 8 + -12a + 12a

Combine like terms: -12a + 12a = 0
-15 + -23a = 8 + 0
-15 + -23a = 8

Add '15' to each side of the equation.
-15 + 15 + -23a = 8 + 15

Combine like terms: -15 + 15 = 0
0 + -23a = 8 + 15
-23a = 8 + 15

Combine like terms: 8 + 15 = 23
-23a = 23

Divide each side by '-23'.
a = -1

Simplifying
a = -1

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