Question

Solve the the value of x and y if f 2x+y=7, 4x-3y+1=0​

Answer 1

2x+y=7 -1

4x-3y=-1. -2.

multiplying eq1 by 2and 2by1

4x+4y=27 -3

4x-3y=-1 -4

by subtractingeq3and4

4x+4y=27

4x-3y=-1

we get 7y =28

y= 4

put value in eq1

2x+y=7

2x+4=7

2x=7-4

x=3/2

Answer 2

Answer:

=2x+y=7

4x-3y=-1

=3(2x+y)=7

1(4x-3y)=-1

=6x+3y=21(1 equation)

4x-3y=-1(2 equation)

10x=20

x=20/10

x=10

Putting value of x in equation 1

6x+3y=21

6×10+3y=21

60+3y=21

3y=21-60

y=-39/3

y=-13