5-(-4)=5+
write as addition

Step-by-step explanation:

Based off the typical rules of integers, expressions like these can be simplified to look different but mean the same thing.

In this case, we subtracted a negative value from a positive value; by doing this, we actually added positive 4.

Based on the same principals, adding a negative number is equivalent to subtraction!

Any time you see equations similar to this, you want to cancel out the 2 negative signs to make it positive!

Please look at the attached file for more information :)

f

step-by-step explanation:

f

1gm = 1000mg so 0.1gm = 1000mg

first, convert the weight to kg

160lb * 1kg/2.2lb = 72.7kg

next, the dose

72.7kg * 100mg/kg = 7270mg