Question

3r=s
3r+s=24.


u=4v
5u-v=10

Answer 1

3r=s

3r+s=24

s+s=24

2s=24

s=12

 

3r=s

3r=12

r=4

 

 

2.u=4v

20v-v=10

19v=10

v=10/19

u=40/19