Question

Solve by elimination method: x-4y=13. 3x+2y=-3

Answer 1

Answer:

Step-by-step explanation:

3x-12y=39

(-)

3x+2y=-3

                               

   -14y = 42

       y =-3

now x=13+4y

          =13-12

            =1

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Answer 2

Answer:

Step-by-step explanation:

3x+2y=11.....(1)

x-4y=13.......(2)

multiply equation (1)by 2and equation (2)by 1

6x+4y=22...(4)

x-4y=13....(5)

add equation (4)and (5)

6x+4y=22

x-4y=13

7x=35

then x=5

substitute x=5 in equation (5)

x-4y=13

5-4y=13

-4y=8

y=-2