Question

3x-5y-4=0 and 9x-2y+7=0 by elimination method​

Answer 1

Step-by-step explanation:

3x-5y= 4----(1)

9x-2y= -7 ----(2)

multiplying eq 1 by 3

(3x-5y=4)×3

9x-15y=12 -----(3)

eliminating eq 2 from eq 3

9x-15y=12

9x-2y= -7

-. +. +

_______

0x- 13y=5

y= -5/13

putting value of y in eq 1

3x+(-5×-5/13)=4

3x+25/13=4

3x=4-25/13

3x= 52/13 - 25/13

3x= 27/13

x= 9/13