Question

solve 7x-15y=2 and x+2y=3 by cross multiplication method​

Answer 1

Answer:

7x - 15y = 2 .....,......1

x + 2y = 3....................2

multiplying equation 2 by 7

7x + 14y = 21.....….....3

Now subtracting equation 1 from 3

7x + 14y = 21

-7x + 15y = -2

________________

29y = 19

y = 19/29

x = 45/29