Question

Solve for x and y: 7x -

4y = 49; 5x -

6y = 57.

​

Answer 1

Answer:

x=3. y= -7

Step-by-step explanation:

multiply 7x-4y=49. by 3

multiply 5x-6y=57. by 2

by solving it we get answer

Answer 2

Answer:

Solution:- x=3;y=-7

Step-by-step explanation:

7x-4y=49---(1); 5x-6y=57---(2)

Using Elimination Method

Multiplying (1) by 6 and (2) by 4

42x-24y=294---(3); 20x-24y=228---(4)

Adding (3) and (4)

42x-24y=294---from(3)

- 20x-24y=228---from(4)

= 22x = 66

x=66/22

x=3

putting x=3 in (1)

7x-4y=49---from(1)

7×3-4y=49

21-4y=49

-4y=49-21

y=28/-4

y=-7