I really need help- 3a-2b=19
5a+8b=21

Transform these so that they can eliminate "as"

what should they do?

a

+2a

b

x15

x15

c

x3

x5

d

x5

x3

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.

Distance=slopeslope is -2/4which equals-1/2the distance between these two points is -1/2

1. 3/6 or 1/22. 1/123. 1/84. 1/105. 2/12 or 1/6