Opposite number is the same number with the opposite sign:
So the opposite of

is

, since the original number is positive
opposite of

is

, since the original number is negative
An Arch is a chief, or principle.
8 - {x - (5 + x)}
= 8 - {x - 5 - x}
= 8 + 5
= 13
Compatible numbers are known as
numbers that are the closest value to the actual numbers- this makes mental
arithmetic to be performed better. The quotient of 358/3 is equal to 119.333 therefore
the compatible number of the quotient of 358/3 is 119.
<span>m=10x-x for x
first subtract x from 10x
m=9x
divide both sides by 9
m/9=x
x=m/9</span>