Answer:
The answer to the first one is
Exact Form : 13/3
Decimal Form : 4.3 repeated
Mixed Number Form : 4 1/3
The answer to the second one is
Exact Form : -1/2
Decimal form : -0.5
The answer to the third one is
Exact Form : 5/6
Decimal Form : 0.83 repeated
Step-by-step explanation:
Step by step for the first one : you have to find the LCD and then combine them.
Step by step for the second one : You have to simplify the numerator so multiply 1 and 4 and then you get -6 + 4/ -1 - (-5). Then add -6 and 4 then you get -2/ -1 - (-5). Then You simplify the denominator, so you multiply -1 by -5 and you get -2/ -1 + 5. Then you add -1 and 5, then you get -2/4. Then you reduce the expression by cancelling the common factors. Cancel the common factor of -2 and 4 and you get -1/2.
Step by step for the third one : You reduce the expression , if possible, by cancelling the common factors.
