Question

Solve 312x + 138y =202; 138x - 312y = 173​

Answer 1

Answer:

x=1/2 and

y=1/2

312x +138y = 202------1

138x +312y= 173------2

adding equn 1 and 2

450x +450y= 375

dividing by 15 both side

30x+ 30y 25

dividing by 5

6x +6y =5-----3

subtract equn 1 and 2

174x- 174y= 29

dividing by 29 both side

6x- 6y =1------4

adding equn 3 and4

x = 1/2

substitute value of x in equn 3

y =1/2

Answer 2

Answer:

Above answer is right but

Step-by-step explanation:

last value of Y=1/3