42=Wf*64 (what fraction)

So basically 42=x times 64 or 42=64x where you want x to be represented as a fraction so just don't simplify as much

42=64x

divide both sdies by 64

42/64=64/64x

42/64=1x

x=42/64

simplify

42/64=21/32

the answer is 21/32 in simplest form