15(y-4)-2(y-a)+5(y+6)=0

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Solution for 15(y-4)-2(y-a)+5(y+6)=0 equation:


Simplifying
15(y + -4) + -2(y + -1a) + 5(y + 6) = 0

Reorder the terms:
15(-4 + y) + -2(y + -1a) + 5(y + 6) = 0
(-4 * 15 + y * 15) + -2(y + -1a) + 5(y + 6) = 0
(-60 + 15y) + -2(y + -1a) + 5(y + 6) = 0

Reorder the terms:
-60 + 15y + -2(-1a + y) + 5(y + 6) = 0
-60 + 15y + (-1a * -2 + y * -2) + 5(y + 6) = 0
-60 + 15y + (2a + -2y) + 5(y + 6) = 0

Reorder the terms:
-60 + 15y + 2a + -2y + 5(6 + y) = 0
-60 + 15y + 2a + -2y + (6 * 5 + y * 5) = 0
-60 + 15y + 2a + -2y + (30 + 5y) = 0

Reorder the terms:
-60 + 30 + 2a + 15y + -2y + 5y = 0

Combine like terms: -60 + 30 = -30
-30 + 2a + 15y + -2y + 5y = 0

Combine like terms: 15y + -2y = 13y
-30 + 2a + 13y + 5y = 0

Combine like terms: 13y + 5y = 18y
-30 + 2a + 18y = 0

Solving
-30 + 2a + 18y = 0

Solving for variable 'a'.

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

Add '30' to each side of the equation.
-30 + 2a + 30 + 18y = 0 + 30

Reorder the terms:
-30 + 30 + 2a + 18y = 0 + 30

Combine like terms: -30 + 30 = 0
0 + 2a + 18y = 0 + 30
2a + 18y = 0 + 30

Combine like terms: 0 + 30 = 30
2a + 18y = 30

Add '-18y' to each side of the equation.
2a + 18y + -18y = 30 + -18y

Combine like terms: 18y + -18y = 0
2a + 0 = 30 + -18y
2a = 30 + -18y

Divide each side by '2'.
a = 15 + -9y

Simplifying
a = 15 + -9y

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