Question

x/6 + y/15 = 4 ;
x/3 - y/12 = 19/4
solve this using substitution method​

Answer 1

Answer:

First we have to solve equation

x/6+y/15=4==4x-y=57---1( by lcm method)

x/3-y/12=19/4==5x+2y=120---2

Now,

multiplying the 1st equation by 2 and 2nd equation by 1 we get,

5x+2y=120--1

8x-2y=114--2

by adding equation 1 and 2 we get

13x=234

x=18

18*5+2y=120

90+2y=120

2y=30

y=15

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