Sort:  

how that ?

you said no hint or anything. I thought you wanted to see people try and then give the answer... anyway -4 works too btw since you resolve by multiplying equation 2 and 3 and divided it by the first one. Anyway...

Coin Marketplace

STEEM 0.16
TRX 0.25
JST 0.034
BTC 95840.97
ETH 2689.81
SBD 0.68