8a-3(2a+5)=13

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Solution for 8a-3(2a+5)=13 equation:


Simplifying
8a + -3(2a + 5) = 13

Reorder the terms:
8a + -3(5 + 2a) = 13
8a + (5 * -3 + 2a * -3) = 13
8a + (-15 + -6a) = 13

Reorder the terms:
-15 + 8a + -6a = 13

Combine like terms: 8a + -6a = 2a
-15 + 2a = 13

Solving
-15 + 2a = 13

Solving for variable 'a'.

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

Add '15' to each side of the equation.
-15 + 15 + 2a = 13 + 15

Combine like terms: -15 + 15 = 0
0 + 2a = 13 + 15
2a = 13 + 15

Combine like terms: 13 + 15 = 28
2a = 28

Divide each side by '2'.
a = 14

Simplifying
a = 14

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