Question

8/21=negative 2/7x what is the value of x! Please explain how and what you do to get the problem so I can learn too

thank you!

Answer 1

8 /21 = - 2/7x.

Cross multiply by multiplying both the numerator of one fraction with the denominator of the other fraction., equating it to the other numerator multiplied by the other denominator.

7x*8 = -2*21

x*7*8 = -2*21

x = -(2*21) / (7*8). 2 into 8 is 4. 7 into 21 is 3.

x = - 3/4

I hope this helps.

Answer 2

You have to get x alone so you divide -2/7 to 8/21

x = -3/4