Question

3m - 9n = 24 when n=-1, 1, 3

Answer 1

Answers:

at n = -1 ............> m = 5

at n = 1 ............> m = 11

at n = 3 ..........> m = 17

Step-by-step explanation:

The given equation is:

3m - 9n = 24

We want to get the value of m at given values of n.

Therefore, we will simply substitute with the given n in the equation and solve form m as follows:

1- At n = -1:

3m - 9n = 24

3m - 9(-1) = 24

3m + 9 = 24

3m = 24 - 9

3m = 15

m = 5

2- At n = 1:

3m - 9n = 24

3m - 9(1) = 24

3m - 9 = 24

3m = 24 + 9

3m = 33

m = 11

3- At n = 3:

3m - 9n = 24

3m - 9(3) = 24

3m - 27 = 24

3m = 24+ 27

3m = 51

m = 17

Hope this helps :)

Answer 2

3m -9n = 24
3m -9 (-1)= 24
3m + 9 = 24
- 9 = -9
3m = 15 divide by both side by 3
m = 5
3m -9n = 24
3m -9 (1) = 24
3m -9 = 24
+9 = 9
3m = 33 Divide by both side by 3

m = 11
3m -9n = 24
3m -9(3) = 24
3m -27 = 24
+27 = 27
3m = 51 Divide by both side by 3

m = 17