4(2y-9)-(y+9)=

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Solution for 4(2y-9)-(y+9)= equation:


Simplifying
4(2y + -9) + -1(y + 9) = 0

Reorder the terms:
4(-9 + 2y) + -1(y + 9) = 0
(-9 * 4 + 2y * 4) + -1(y + 9) = 0
(-36 + 8y) + -1(y + 9) = 0

Reorder the terms:
-36 + 8y + -1(9 + y) = 0
-36 + 8y + (9 * -1 + y * -1) = 0
-36 + 8y + (-9 + -1y) = 0

Reorder the terms:
-36 + -9 + 8y + -1y = 0

Combine like terms: -36 + -9 = -45
-45 + 8y + -1y = 0

Combine like terms: 8y + -1y = 7y
-45 + 7y = 0

Solving
-45 + 7y = 0

Solving for variable 'y'.

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

Add '45' to each side of the equation.
-45 + 45 + 7y = 0 + 45

Combine like terms: -45 + 45 = 0
0 + 7y = 0 + 45
7y = 0 + 45

Combine like terms: 0 + 45 = 45
7y = 45

Divide each side by '7'.
y = 6.428571429

Simplifying
y = 6.428571429

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