3(4a+5b)+(a+2b)=

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Solution for 3(4a+5b)+(a+2b)= equation:


Simplifying
3(4a + 5b) + (a + 2b) = 0
(4a * 3 + 5b * 3) + (a + 2b) = 0
(12a + 15b) + (a + 2b) = 0

Remove parenthesis around (a + 2b)
12a + 15b + a + 2b = 0

Reorder the terms:
12a + a + 15b + 2b = 0

Combine like terms: 12a + a = 13a
13a + 15b + 2b = 0

Combine like terms: 15b + 2b = 17b
13a + 17b = 0

Solving
13a + 17b = 0

Solving for variable 'a'.

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

Add '-17b' to each side of the equation.
13a + 17b + -17b = 0 + -17b

Combine like terms: 17b + -17b = 0
13a + 0 = 0 + -17b
13a = 0 + -17b
Remove the zero:
13a = -17b

Divide each side by '13'.
a = -1.307692308b

Simplifying
a = -1.307692308b

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