Algebra word problem

Question

Find the value of y given that z = 5 and v = 7.

 

x=4v/3z

 

y=3x/2

Answer 1

First, we need to find the value of x by plugging in the known values of z and v.

 

x = 4(7) / 3(5)

x = 28 / 15

 

 

Finally, we can substitute this value of x to the function of y.

 

y = (3 / 2) * (28 / 15)

 

 

Using the method of cancelling terms and factors instead of multiplying fractions the old fashion way, we get

 

y = (3 / 15) * (28 / 2)

y = 14 / 5

 

 

Answer 2

You have to solve for x first and then plug the x-value in to the 2nd equation. 

 

X=(4*7)/(3*5)

 

then y= (3*x)/2