Question

solve the folloeing by elimination method:3x+4y-7=0 and 2x+y+2=0

Answer 1

Answer:

7, -2

Step-by-step explanation:

1)3x+4y-7=0=>3x+4y=7

2)2x-y+2=0=>2x-y=-2

Answer 2

Answer:

x= -3 , y= 4

Step-by-step explanation:

3x+4y-7 =0 eq 1

(2x+y+2)*4 = 8x+4y+8 eq 2

sub eq 1 from 2

8x+4y+8

3x+4y-7

- - +

5x +0+15=0

5x=-15

x=-3

put value of x in eq1

3(-3) +4y=7

4y=7 +9

y =16/4

y=4