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9-4*y=-5*y equation

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Numerical solution:

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The solution

You have entered [src]
9 - 4*y = -5*y
$$9 - 4 y = - 5 y$$
Detail solution
Given the linear equation:
9-4*y = -5*y

Move free summands (without y)
from left part to right part, we given:
$$- 4 y = - 5 y - 9$$
Move the summands with the unknown y
from the right part to the left part:
$$y = -9$$
We get the answer: y = -9
The graph
Rapid solution [src]
y1 = -9
$$y_{1} = -9$$
y1 = -9
Sum and product of roots [src]
sum
-9
$$-9$$
=
-9
$$-9$$
product
-9
$$-9$$
=
-9
$$-9$$
-9
Numerical answer [src]
y1 = -9.0
y1 = -9.0