Question

x/2 + x/5 + x/3 = 31 Solve the equation

Answer 1

to make it easier multiply the equation by 30

Answer 2

Bring them to common denominator

Answer 3

Which is clearly 30

Answer 4

31/30 x = 31

Answer 5

That means x = 1

Answer 6

@Mikael Oh okay!!! Thank you sooo much I was having a lot of trouble with this one

Answer 7

Medal ?

Answer 8

\[R(r _{1}+r _{2}) = r _{1}r _{2} \] Solve for R << Could someone help me with this please??

Answer 9

Simply divide both sides by \[\Large r _{1}+r _{2}\] to isolate R

Answer 10

\[\Large R(r _{1}+r _{2}) = r _{1}r _{2} \]


\[\Large R = \frac{r _{1}r _{2}}{r _{1}+r _{2}} \]

Answer 11

@jim_thompson5910 Thank you sooooo much!! You're the best!!

Answer 12

you're welcome