3(a-4)+15=13

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Solution for 3(a-4)+15=13 equation:


Simplifying
3(a + -4) + 15 = 13

Reorder the terms:
3(-4 + a) + 15 = 13
(-4 * 3 + a * 3) + 15 = 13
(-12 + 3a) + 15 = 13

Reorder the terms:
-12 + 15 + 3a = 13

Combine like terms: -12 + 15 = 3
3 + 3a = 13

Solving
3 + 3a = 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 + 3a = 13 + -3

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

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

Divide each side by '3'.
a = 3.333333333

Simplifying
a = 3.333333333

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