alyssa0711 alyssa0711

13-09-2017
Mathematics

contestada

Can someone explain these please?

Can someone explain these please class=

Respuesta :

kphung76127 kphung76127

13-09-2017

5.
-4=r/20-5

First add 5 to both sides
1=r/20

Then multiply both sides by 20
20=r

Final answer: r=20

7.
(v+9)/3=8

First multiply both sides by 3
v+9= 24

Subtract 9 from both sides
v=15

Final answer: v=15

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