Question

2r + 3s = 14
6r - 3s = 6

Answer 1

r= 2.5 and s=3

Explanation:

2r plus 6r equals 8r

-3s and 3s cancell eachother out

and 14 plus 6 is 20

with leaves us with

8r=20

20 divided by 8 is 2.5

now we go back to the orginal problems

2 times 2.5 is 5

14 minus 5 is 9

9 divided by 3 is 3

so s=3

but to check this all you would use r=2.5 and s=3 in the othe equsion

6 times 2.5 is 15

and -3 times 3 is -9

15-9= 6