13-5(a+2)=9+9

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Solution for 13-5(a+2)=9+9 equation:


Simplifying
13 + -5(a + 2) = 9 + 9

Reorder the terms:
13 + -5(2 + a) = 9 + 9
13 + (2 * -5 + a * -5) = 9 + 9
13 + (-10 + -5a) = 9 + 9

Combine like terms: 13 + -10 = 3
3 + -5a = 9 + 9

Combine like terms: 9 + 9 = 18
3 + -5a = 18

Solving
3 + -5a = 18

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 + -5a = 18 + -3

Combine like terms: 3 + -3 = 0
0 + -5a = 18 + -3
-5a = 18 + -3

Combine like terms: 18 + -3 = 15
-5a = 15

Divide each side by '-5'.
a = -3

Simplifying
a = -3

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