-3(a+5)-6(8a+4)=-5a-7a

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Solution for -3(a+5)-6(8a+4)=-5a-7a equation:


Simplifying
-3(a + 5) + -6(8a + 4) = -5a + -7a

Reorder the terms:
-3(5 + a) + -6(8a + 4) = -5a + -7a
(5 * -3 + a * -3) + -6(8a + 4) = -5a + -7a
(-15 + -3a) + -6(8a + 4) = -5a + -7a

Reorder the terms:
-15 + -3a + -6(4 + 8a) = -5a + -7a
-15 + -3a + (4 * -6 + 8a * -6) = -5a + -7a
-15 + -3a + (-24 + -48a) = -5a + -7a

Reorder the terms:
-15 + -24 + -3a + -48a = -5a + -7a

Combine like terms: -15 + -24 = -39
-39 + -3a + -48a = -5a + -7a

Combine like terms: -3a + -48a = -51a
-39 + -51a = -5a + -7a

Combine like terms: -5a + -7a = -12a
-39 + -51a = -12a

Solving
-39 + -51a = -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.
-39 + -51a + 12a = -12a + 12a

Combine like terms: -51a + 12a = -39a
-39 + -39a = -12a + 12a

Combine like terms: -12a + 12a = 0
-39 + -39a = 0

Add '39' to each side of the equation.
-39 + 39 + -39a = 0 + 39

Combine like terms: -39 + 39 = 0
0 + -39a = 0 + 39
-39a = 0 + 39

Combine like terms: 0 + 39 = 39
-39a = 39

Divide each side by '-39'.
a = -1

Simplifying
a = -1

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