Louis and Tony are building houses out of blocks. Louis has 30 blocks, and gives Tony 13 blocks to build with. Which equation can be used to determine the number of blocks Louis has left to build his house with?
1.
30 - 13 = x
2.
1330 = x
3.
30-X = 13
4.
X - 13 = 30
pls help

Hii1977 cleaner shrimp are a species of shrimp that clean parasites from other organisms. fish allow the shrimp to eat the parasites in their mouth. the shrimp get a source of nutrition. the relationship between the shrimp and the fish is this association indicates that for the smaill aneser arecommensal,mutualistic,or parasitic for the begger one the anser are the shrimp and fish benefit each other , the shrimp harm the fish, or the fish do not benetit from the shrimp