12-2(4a+9)=22-18a+13

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Solution for 12-2(4a+9)=22-18a+13 equation:


Simplifying
12 + -2(4a + 9) = 22 + -18a + 13

Reorder the terms:
12 + -2(9 + 4a) = 22 + -18a + 13
12 + (9 * -2 + 4a * -2) = 22 + -18a + 13
12 + (-18 + -8a) = 22 + -18a + 13

Combine like terms: 12 + -18 = -6
-6 + -8a = 22 + -18a + 13

Reorder the terms:
-6 + -8a = 22 + 13 + -18a

Combine like terms: 22 + 13 = 35
-6 + -8a = 35 + -18a

Solving
-6 + -8a = 35 + -18a

Solving for variable 'a'.

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

Add '18a' to each side of the equation.
-6 + -8a + 18a = 35 + -18a + 18a

Combine like terms: -8a + 18a = 10a
-6 + 10a = 35 + -18a + 18a

Combine like terms: -18a + 18a = 0
-6 + 10a = 35 + 0
-6 + 10a = 35

Add '6' to each side of the equation.
-6 + 6 + 10a = 35 + 6

Combine like terms: -6 + 6 = 0
0 + 10a = 35 + 6
10a = 35 + 6

Combine like terms: 35 + 6 = 41
10a = 41

Divide each side by '10'.
a = 4.1

Simplifying
a = 4.1

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