Answer:
d=-9
Step-by-step explanation:
you simplify both side of the equation
d/3-9=-12
1/3d+-9=-12
add 9 both sides
1/3d-9+9=-12+9
1/3d=-3
then you multiply 3 both sides
3 x (1/3d)=(3) x(-3)
d=-9
Hopes this helps :)
Answer:
You have to convert the fractions to decimals and then just divide like normal.
<h2>
2.5/1.5 = <em><u>1.666666666666</u></em></h2>
<em><u>Hope</u></em><em><u> </u></em><em><u>this</u></em><em><u> </u></em><em><u>helps</u></em><em><u> </u></em><em><u>you</u></em><em><u>!</u></em><em><u> </u></em>
We will use d for drama and y for yearbook.
d + y = 64
d = y + 10
Now that we have the system if equations we can use substitution where you plug y+10 in for d in the first equation.
(y + 10) + y = 64
2y + 10 = 64
2y = 54
y = 27
If 27 of the 64 are in the yearbook club, 37 are in drama.