m+3n=7;n=-2,0,1

I'm assuming you're solving for m.

Just plug in the n and solve for m!

for example,
m+3(-2)=7

m+(-6)=7

13,7,10

To find the value of m when n is -2, 0, and 1 in the equation m + 3n = 7, let's substitute each value of n into the equation and solve for m.

1) When n is -2:
m + 3(-2) = 7
m - 6 = 7
m = 7 + 6
m = 13

2) When n is 0:
m + 3(0) = 7
m + 0 = 7
m = 7

3) When n is 1:
m + 3(1) = 7
m + 3 = 7
m = 7 - 3
m = 4

Therefore, when n is -2, 0, and 1, the corresponding values of m are 13, 7, and 4.