Question

Ruel say that the system x+y=10, 3x-y=12 has exactly one solution

Answer 1

Step-by-step explanation:

x + y = 10

3x - y = 12

adding both equation

4x = 22

x = 22/4

x = 5.5

Substitute x = 5.5 in first equation

x + y = 10

5.5 + y = 10

y = 10 - 5.5

y = 4.5

therefore x = 5.5 and y = 4.5

hope you get your answer