4(a-3)+a=13

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


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

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

Combine like terms: 4a + a = 5a
-12 + 5a = 13

Solving
-12 + 5a = 13

Solving for variable 'a'.

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

Add '12' to each side of the equation.
-12 + 12 + 5a = 13 + 12

Combine like terms: -12 + 12 = 0
0 + 5a = 13 + 12
5a = 13 + 12

Combine like terms: 13 + 12 = 25
5a = 25

Divide each side by '5'.
a = 5

Simplifying
a = 5

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