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Alonzo Boyle
Mathematics
1 October, 15:07
3m - 9n = 24; n = - 1,1,3
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Shea Best
1 October, 15:13
0
given that
3m - 9n = 24
when n = - 1
substitute it in the equation
thus
3m - 9 (-1) = 24
solving for m
3m + 9 = 24
3m = 24-9
3m=15
dividing through by 3
3m/3 = 15/3
m = 5. thus when n = - 1, m=5
also put n=1 into the equation
3m - 9 (1) = 24
3m - 9 = 24
3m = 24+9
3m = 33
dividing through by 3
3m/3 = 33/3
m=11
thus when n = 1, m=11
lastly, put n = 3 into the equation
3m - 9 (3) = 24
3m - 27 = 24
3m = 24+27
3m = 51
dividing through by 3
3m/3 = 51/3
m = 17. Thus when n = 3, m = 17.
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