3(4y+7a)-5(y-12a)=

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Solution for 3(4y+7a)-5(y-12a)= equation:


Simplifying
3(4y + 7a) + -5(y + -12a) = 0

Reorder the terms:
3(7a + 4y) + -5(y + -12a) = 0
(7a * 3 + 4y * 3) + -5(y + -12a) = 0
(21a + 12y) + -5(y + -12a) = 0

Reorder the terms:
21a + 12y + -5(-12a + y) = 0
21a + 12y + (-12a * -5 + y * -5) = 0
21a + 12y + (60a + -5y) = 0

Reorder the terms:
21a + 60a + 12y + -5y = 0

Combine like terms: 21a + 60a = 81a
81a + 12y + -5y = 0

Combine like terms: 12y + -5y = 7y
81a + 7y = 0

Solving
81a + 7y = 0

Solving for variable 'a'.

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

Add '-7y' to each side of the equation.
81a + 7y + -7y = 0 + -7y

Combine like terms: 7y + -7y = 0
81a + 0 = 0 + -7y
81a = 0 + -7y
Remove the zero:
81a = -7y

Divide each side by '81'.
a = -0.08641975309y

Simplifying
a = -0.08641975309y

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