Question

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

Answer 1

Step-by-step explanation:

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

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

On multiply 3 on eq 1, we have

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

On subtracting eq 1 from 2, we have :

=> 13 y = - 19

=> y = - 19 / 13

Then, using the value of y in eq. 1, we have

3x - 5× - 19 / 13 = 4

39x + 95 = 52

39 x = 52 - 95

39x = - 43

X = - 43/ 39

If it is helpful for you then mark me branliest and follow

Answer 2

Answer:

x=-5/7

y=9/5

Step-by-step explanation:

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

9x-2y+7=0

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

To eliminate,

Multiplying eq(1) by 2&eq(2) by 5

6x-10y=20 -(3)

45x-10y=-35 -(4)

Now,eliminating,

51x=-15

x=-15/51

x=-5/7

now substitute x in (1),

3(-5/7)-5y=4

-5y=4(7)/3(-5)

..y=9/5

Ans: x=-5/7, y=9/5.