Question

solve 3x+y=2 2x+3y=20 by substitution method​

Answer 1

Answer:

3x+y=2. (*3)

2x+3y=20

9x+3y=6

2x+3y=20

change signs 3y and 3y will get cancelled

7x= -14

x= -2

substitute x in 1

3(-2)+y=2

-6+y=2

y=2+6

y=8

Answer 2

Answer:

x=2.33

y=-4.99

Step-by-step explanation:

3x+y=2

y=-3x+2

Substitute y=-3x+2 to equation 2x+3y=20

2x+3(-3x+2)=20

2x - 9x+6=20

-6x=20-6

x=14/-6=2.33

y=-3(2.33)+2=-4.99