3x - 4y = 7 , for x 15y + 1 = x , for y

Mathematics · High School · Wed Jan 13 2021

Answered on

We have,

3x - y = 7      …1 

And, 15y + 1 = x      ….2

Putting value of x in equation 1, we get

3(15y + 1) - y = 7

45y + 3 - y = 7

42y = 7 - 3

42y = 4

y = 4/42

y = 2/21

Putting value of y in 2, we get

x = 1 + 15(2/21)

x = 1 + 10/7

x = (7+10)/7

x = 17/7

 

Related Questions