8a-13+3a=12+5-7

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Solution for 8a-13+3a=12+5-7 equation:


Simplifying
8a + -13 + 3a = 12 + 5 + -7

Reorder the terms:
-13 + 8a + 3a = 12 + 5 + -7

Combine like terms: 8a + 3a = 11a
-13 + 11a = 12 + 5 + -7

Combine like terms: 12 + 5 = 17
-13 + 11a = 17 + -7

Combine like terms: 17 + -7 = 10
-13 + 11a = 10

Solving
-13 + 11a = 10

Solving for variable 'a'.

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

Add '13' to each side of the equation.
-13 + 13 + 11a = 10 + 13

Combine like terms: -13 + 13 = 0
0 + 11a = 10 + 13
11a = 10 + 13

Combine like terms: 10 + 13 = 23
11a = 23

Divide each side by '11'.
a = 2.090909091

Simplifying
a = 2.090909091

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