Question

solve by substitution method
9m-2n=9 ; 3m-n=3​

Answer 1

Answer:

m = 1 and n = 0

Step-by-step explanation:

9m-2n = 9 ------------eq.(1)

3m-n = 3 ⇒  $m=\frac{3+n}{3}$  ---------------eq.(2)

substitute eq.(2) in eq.(1)

⇒9m-2n = 9

⇒$9(\frac{3+n}{3} )-2n=9$

⇒$3(3+n)-2n=9$

⇒$9+3n-2n=9$

⇒n = 9-9

⇒n = 0

n= 0 sub. in eq. (1)

⇒9m-2n = 9

⇒9m-2(0) = 9

⇒9m = 9

⇒m = 9/9

⇒m = 1

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Answer 2

Answer:

m=1 and n=0

Step-by-step explanation: