Question

Solve using substitution method:-

2x+7y=39
5x+5y=3

PLEASE HELP ME WITH THIS QUESTION......​

Answer 1

Answer:

pic 1 for 2nd

pic 2 for 1st

Answer 2

let x is equals to 3 minus 5 y / 5

putting in equation number 1

2 *3 minus 5 y/ 5 + 7 y is equals to 39

6 - 10 y upon 5 + 7 y is equals to 39

by taking lcm

6-10y/5+35y/5=39

6+25y/5=39

6+25y=195

25y=195-6

25y=189

y=189/25

y=7.56

y=8

putting equation number 2

5x+40=3

x=-57/5

x=-11.4