Question

2x+y=4,x-y=12 solve by substitution method​

Answer 1

Answer:

x=25/2 y=1/2

Step-by-step explanation:

given x-y=12

x=12+y

given 2x+y=4

(using x=12+y)

2(12+y)+y=4

24+2y+y=4

24+3y=4

3y=4/24

y=1/2

given x-y=12

x-1/2=12

2x-1=24

x=25/2