I have a few math questions... 9-10y= 16.. WHAT IS Y=to?

Question

also........ 18-10c= 5c+ 100.... what is C= to

Answer 1

-10y=7
y=(-7/10)

-15c=82
c=(-82/15)

Answer 2

9-10y=16

This is a basic two step equation. First, you do the opposite of the order of opperations. Which is the 9.
9-10y=16
subtract the 9 from both sides
10y=16-9(7)
10y=7
Now, you want to get Y by itself, so you divide by ten on both sides
y=7/10

2. 18-10c=5c+100 *This is an Algebra 1 problem, where there is a variable on both sides. First, get rid of the variables on both sides.
18-10c-5c=100
18-15c=100 **Combine the -10c and -5c
Then Subtract 18 from both sides
18-18-15c=100-18
15c=82
**Divide both sides by 15
Then you get 5.466666(repeated)

Answer 3

9-10y=16
subtract 9 from the other side
-10y=16-9
simplify
-10y=7
divide both sides by -10
y=-7/10

18-10c=5c+100
add 10c to the other side
18=5c+10c+100
simplify
18=15c +100
subtract 100 from the other side
18-100=15c
simplify
-82=15c
divide by 15
-82/15

Answer 4

9-10y=16
-10y=16-9
-10y=7
y= -7/10

18-10c=5c+100
18=5c+100+10c
18-100=5c+10c
-82=15c
c= -82/15

those are some ugly fractions, hope this helps

Answer 5

9-10y= 16
-10y=16-9
-10y=7
y=-7/10

18-10c= 5c+ 100
18-100=5c+10c
-82=15c
c=-82/15

Answer 6

Y = -7/10
C= -82/15

Answer 7

9-10y=16
-9 -9
-10y= 7
(-10y)/-10=7/(-10)
y=-.7

There. Now you know the process. Do the other one yourself so you learn something.

Answer 8

y=-.5
c=-5.5 (about)

Answer 9

if u don't know algebra, why do u take it.

Answer 10

y=-.7

c=- 5.87