12(3a+5b)-7(6a+3b)=

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Solution for 12(3a+5b)-7(6a+3b)= equation:


Simplifying
12(3a + 5b) + -7(6a + 3b) = 0
(3a * 12 + 5b * 12) + -7(6a + 3b) = 0
(36a + 60b) + -7(6a + 3b) = 0
36a + 60b + (6a * -7 + 3b * -7) = 0
36a + 60b + (-42a + -21b) = 0

Reorder the terms:
36a + -42a + 60b + -21b = 0

Combine like terms: 36a + -42a = -6a
-6a + 60b + -21b = 0

Combine like terms: 60b + -21b = 39b
-6a + 39b = 0

Solving
-6a + 39b = 0

Solving for variable 'a'.

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

Add '-39b' to each side of the equation.
-6a + 39b + -39b = 0 + -39b

Combine like terms: 39b + -39b = 0
-6a + 0 = 0 + -39b
-6a = 0 + -39b
Remove the zero:
-6a = -39b

Divide each side by '-6'.
a = 6.5b

Simplifying
a = 6.5b

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