Answer:
b=-a
Step-by-step explanation:
we know that b is located the same distance from 0 as another number, a, but in the opposite direction.
so the sum of the two numbers equal zero
a+b=0
a=-b or b=-a
Answer: 18 - 20 = -2
in a day (3/4)÷7=3/28
in a year (3/28)×365=39.107
It comes from you :)