-5(5a+9)+8(6+2a)=-3-7a

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Solution for -5(5a+9)+8(6+2a)=-3-7a equation:


Simplifying
-5(5a + 9) + 8(6 + 2a) = -3 + -7a

Reorder the terms:
-5(9 + 5a) + 8(6 + 2a) = -3 + -7a
(9 * -5 + 5a * -5) + 8(6 + 2a) = -3 + -7a
(-45 + -25a) + 8(6 + 2a) = -3 + -7a
-45 + -25a + (6 * 8 + 2a * 8) = -3 + -7a
-45 + -25a + (48 + 16a) = -3 + -7a

Reorder the terms:
-45 + 48 + -25a + 16a = -3 + -7a

Combine like terms: -45 + 48 = 3
3 + -25a + 16a = -3 + -7a

Combine like terms: -25a + 16a = -9a
3 + -9a = -3 + -7a

Solving
3 + -9a = -3 + -7a

Solving for variable 'a'.

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

Add '7a' to each side of the equation.
3 + -9a + 7a = -3 + -7a + 7a

Combine like terms: -9a + 7a = -2a
3 + -2a = -3 + -7a + 7a

Combine like terms: -7a + 7a = 0
3 + -2a = -3 + 0
3 + -2a = -3

Add '-3' to each side of the equation.
3 + -3 + -2a = -3 + -3

Combine like terms: 3 + -3 = 0
0 + -2a = -3 + -3
-2a = -3 + -3

Combine like terms: -3 + -3 = -6
-2a = -6

Divide each side by '-2'.
a = 3

Simplifying
a = 3

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