72:84=_:7 what does the blank equal. how whould u solve it?

Question

72:84=_:7 what does the blank equal.   how whould u solve it?

ganeshie8 · Answer

$ a : b = c : d $

is same as 

$\large \frac{a}{b} = \frac{c}{d}$

cross multiply

$\large   ad = bc$

anonymous · Answer

I don't understand what u mean because its 72:84=blank :7 because im doing ratios and I have to simplify it

ganeshie8 · Answer

$72:84= x  :7 $

is same as

$\large \frac{72}{84} = \frac{x}{7}$

cross multiply

$\large  72 \times 7 = x \times 84$

solve $x$

anonymous · Answer

ohh ok
thank you for ur help but I think u would divide it not multiply

ganeshie8 · Answer

when u cross multiply, division problems turns into a multiplicaiton problem

anonymous · Answer

ohh

ganeshie8 · Answer

^ above,  solve $x$ and see wat u get :)

anonymous · Answer

I got 504

anonymous · Answer

and I divided 504%7 and I got 72 and I did 48%7 and I got 6 remander 6 so I did 72:48=66:7 right

ganeshie8 · Answer

$\large  72 \times 7 = x \times 84$

$\large  \frac{72 \times 7}{84} = x$

$\large  \frac{504}{84} = x$

$\large   6 = x$

ganeshie8 · Answer

so,

72:84=6:7