(y-9)-(y+0)=4y

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Solution for (y-9)-(y+0)=4y equation:


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

Reorder the terms:
(-9 + y) + -1(y + 0) = 4y

Remove parenthesis around (-9 + y)
-9 + y + -1(y + 0) = 4y

Reorder the terms:
-9 + y + -1(0 + y) = 4y
Remove the zero:
-9 + y + -1(y) = 4y

Combine like terms: y + -1y = 0
-9 + 0 = 4y
-9 = 4y

Solving
-9 = 4y

Solving for variable 'y'.

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

Add '-4y' to each side of the equation.
-9 + -4y = 4y + -4y

Combine like terms: 4y + -4y = 0
-9 + -4y = 0

Add '9' to each side of the equation.
-9 + 9 + -4y = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -4y = 0 + 9
-4y = 0 + 9

Combine like terms: 0 + 9 = 9
-4y = 9

Divide each side by '-4'.
y = -2.25

Simplifying
y = -2.25

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