Get Help with Questions: Explaining Solutions

[r-soy]

hi

help me in these questions

I want to explain the solution to these questions

How do we get the result ?

 

[VeeEight]

Your attachment may take a while to get 'approval'. Perhaps post the question in text

 

[HallsofIvy]

It's pretty much basic algebra. The first equation is y= 3- 2/x and I guess the problem is to solve for x. First subtract 3 from both sides: y- 3= -2/x. Divide both sides by -2 to get (y- 3)/(-2)= 1/x. Now take the reciprocal of both sides: -2x/(y- 3)= x.

The second equation is y= (1/5) x. Okay, since x is divided by 5 and you want to solve for x, do the "opposite"- multiply both sides by 5: 5y= x.