Question

Given the linear equation 5x−3y=7.
If x = 3/5, solve for y.




a)

y=−3/4



b)

y=−4/3



c)

y=−10/3



d)

y=−3/10

I'm like 90% sure its c

Answer 1

It is not C

Answer 2

oh ok

Answer 3

The first step is to substitute in 3/5 for x
\[5(\frac{ 3 }{ 5 })-3y=7\]
Simplify that please

Answer 4

I cant I don't understand

Answer 5

Well what is 5 times 3/5?

Answer 6

You are given an equation in two unknowns, a linear equation.

You are told that x=3/5. You need to substitute this value for x in the given equation.

This will leave you with an equation in y only (x will have disappeared).

Simplify this equation by isolating -3y on the left side of your equation.

Finally, solve for y by dividing both sides of the equation by -3.

Show whatever work you can do. I'm sure you can handle at least part of this procedure.

Answer 7

If you don't understand something, please ask for clarification. Being able to do that is a very valuable skill.