Answer:
18
hope this helps
have a good day :)
Step-by-step explanation:
Answer:
<h2>9</h2>
Step-by-step explanation:
(-)(-) = (+)
(-)(+) = (-)
(+)(-) = (-)
(+)(+) = (+)
-(-21) = (-)(-21) = (+)21 = 21
-12 - (-21) = -12 + 21 <em>use commutative property: a + b = b + a</em>
= 21 + (-12) = 21 - 12 = 9
PROBLEM 9:
0.25
PROBLEM 8:
3/14
PROBLEM 7:
1 1/12 or 13/12
