SOLUTION: if (x, -3.2) is a solution to the equation 4x= 5y-17, what is the value of x?

Algebra ->  Linear-equations -> SOLUTION: if (x, -3.2) is a solution to the equation 4x= 5y-17, what is the value of x?      Log On


   

Question 119805: if (x, -3.2) is a solution to the equation 4x= 5y-17, what is the value of x?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
If (x, -3.2) is a solution, then y=-3.2

4x=5y-17 Start with the given equation



4x=5%28-3.2%29-17 Plug in y=-3.2



4x=-16-17 Multiply



4x=-33 Combine like terms on the right side


x=%28-33%29%2F%284%29 Divide both sides by 4 to isolate x



x=-33%2F4 Reduce

--------------------------------------------------------------
Answer:
So our answer is x=-33%2F4 (which is approximately x=-8.25 in decimal form)