Question

Solve by the substitution method....
9m+n=45
m-5n=51

Answer 1

Rewrite
45m+5n=225
m-5n = 51

SUbstitude 2 from 1

44m = 174
m = 174/44
n = (174/44 -51)/5

Answer 2

so what is the order pair then please

Answer 3

This does no make scence to me Ivanbaj 45m+5n=225 how did you get that?

Answer 4

Problem!

You need to add 1. To 2 !!!

46m = 276
m =276/46

Answer 5

m = 6
n= 9

Answer 6

(6,9)

Answer 7

m-5n=51 <- m = 51+5n


9(51+5n)+n=45 ; solve for n

459 + 45n +n = 45

46n = -414

n = -414/46 = -9
............

Answer 8

m = 51+5n

m = 51+5(-9)

m = 51 - 45

m = 6

Answer 9

9m+n=45
m-5n=51

..get m alone to get m=5n+51.
then plug that into the first equation
9(5n+51)=45
45n+459=45
get n alone..
45n=-414
divide both sides by 45
n=-9.2

plug n into 9m+n=45 to get m
so 9m+(-9.2)=45
9m=54.2
divide both sides by 9

so you get
m=6.02
and n=-9.2

Answer 10

oops its 9(5n+51)+n=45
45n+459+n=45

46n=-414
n=-9

plug n = -9
into 9m+(-9)=45
9m=54
m=6