Tom has 50 coins consisting of quarters and dimes. The combined value of coins is $8.30. How many dimes and quarters does Tom ha
1 answer:
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Answer:
a. -1
b. 8
c. 3
Step-by-step explanation:
a.
6-7
(factor out the negative sign)
-(7-6)
(calculate)
-1
(your answer)
b.
6-(-2)
(remove the parentheses)
6+2
(calculate)
8
(your answer)
c.
6-3=3
