Question

Using substitution method find the value of 100u + 30v =6 , 75u + 75v =8

Answer 1

Answer:

Step-by-step explanation:

100u+30v=6

100u=6-30v

u=6-30v/100

Using it in 75u+75v=8

75(6-30v/100)+75v=8

3(6-30v/4)+75v=8

18-90v+300v/4=8

18+210v=32

210v=14

v=15

u=6-30(15)/100=6-450/100=4.44