2(a-9)+15=13

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Solution for 2(a-9)+15=13 equation:


Simplifying
2(a + -9) + 15 = 13

Reorder the terms:
2(-9 + a) + 15 = 13
(-9 * 2 + a * 2) + 15 = 13
(-18 + 2a) + 15 = 13

Reorder the terms:
-18 + 15 + 2a = 13

Combine like terms: -18 + 15 = -3
-3 + 2a = 13

Solving
-3 + 2a = 13

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 + 2a = 13 + 3

Combine like terms: -3 + 3 = 0
0 + 2a = 13 + 3
2a = 13 + 3

Combine like terms: 13 + 3 = 16
2a = 16

Divide each side by '2'.
a = 8

Simplifying
a = 8

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