Hello there, to answer your question...
5/7 =x/10
x= 50/7
Let's solve your equation step-by-step.
5 /7
=
x /10
Step 1: Cross-multiply.
5 /7
=
x /10
(5)*(10)=x*(7)
50=7x
Step 2: Flip the equation.
7x=50
Step 3: Divide both sides by 7.
7x 7
=
50 /7
x=
50 /7
I hope this helps. :)