Question

10m-9n=15, 5m-4n-10 I need to find a solution or elimination

Answer 1

10m-9n=15,
5m-4n = 10
multiply 2nd by 2
10m - 8n = 10

oh - should it b, 5m-4n=10 not 5m-4n -10?

Answer 2

it's = not -

Answer 3

ok
so if we subtract the last equation from the first we eliminate m
-n = -5
n = 5
plug n=5 into first equation
10m - 9(5) =15
10m = 14+45 = 60
m = 6

solution is m=6,n=5

Answer 4

oh - theres a typo on the 4th line in my first post
correct is
10m - 8n = 20

this doesn't affect the solution

Answer 5

you ok with this?

Answer 6

yes sorry was typing a paper, and thank you for the help :)

Answer 7

yw

Answer 8

Can you help me graph y=2/3x+1 and y=-1+8/12x in the same graph