3(a-5)-6=-15

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Solution for 3(a-5)-6=-15 equation:


Simplifying
3(a + -5) + -6 = -15

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

Reorder the terms:
-15 + -6 + 3a = -15

Combine like terms: -15 + -6 = -21
-21 + 3a = -15

Solving
-21 + 3a = -15

Solving for variable 'a'.

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

Add '21' to each side of the equation.
-21 + 21 + 3a = -15 + 21

Combine like terms: -21 + 21 = 0
0 + 3a = -15 + 21
3a = -15 + 21

Combine like terms: -15 + 21 = 6
3a = 6

Divide each side by '3'.
a = 2

Simplifying
a = 2

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