Question

will someone work this problem out with me
solve by substitution method
4m+n=27
m-5n=54
im stuck and dont know what to do next

Answer 1

m= 54+5n
put in the first eq

Answer 2

4(54+5n)+n=27

Answer 3

21n=27-216=-189
n=-9
m=54+5(-9)=54-45=9

Answer 4

i was taught
n=27-4m
m-5(27-4m)=54
m-135+20m=54
this is where i got stuck

Answer 5

21m=54-135=-81
m = -81/21

Answer 6

ahhh....we must get the same values of m and n....i guess i have done some mistake earliear:S

Answer 7

oh yess got my mistake

Answer 8

20n=-189

Answer 9

can't you answer it with simultaneous equations?

Answer 10

21m = 54+135...

Answer 11

yup :)

Answer 12

off course we can do, but ann wanted by the substitution method

Answer 13

missmys; there are alot of ways to solve it :)

Answer 14

oh, ok :)

Answer 15

the trick is trying to fit thru the right hoops at the right times for tinas teacher.... hes a tyrant ;)

Answer 16

yes he is

Answer 17

XD

Answer 18

ty everyone

Answer 19

quick question why does the 20m change to 21m?

Answer 20

20m + m = m(20+1) = 21m

Answer 21

m+21m=21m

Answer 22

coefficients are added up

Answer 23

oh ok i missed that part

Answer 24

if you ahve 20 apples on the counter and 1 apple on the table; how many apples you got all together? :)

Answer 25

lol

Answer 26

uzma..... m+21m = 21m lol....youre funny :)

Answer 27

so apparently i need a letter of recomendation to go to a 4 year college...

Answer 28

who is sposed to writ eit?

Answer 29

anyone that is in a professional state, like a guidence consular or someone like that

Answer 30

UR MENTOR!!

Answer 31

or form tutor

Answer 32

i mentor myself lol

Answer 33

???
i have a mentor at school but she only mentored me once
pointless really :)
what about form tutor then?

Answer 34

whats a form tutor?

Answer 35

at 40...there isnt much more that i can be mentored or tutored in ;)

Answer 36

wait, do you go to a school?
cause in our school we have our mentor and form tutor write those things

Answer 37

form tutor just someone to talk to whenever you need it,
but we have to go everyday and its pointless if you have no problems
and you do discussions and stuff

Answer 38

amistre64 is the tutor!
or atleast for me when hes available he has never been wrong