Answer:
1. B
2. A
3. A
Step-by-step explanation:
For number 1: Just add the fractions.
For number 2:
Rewriting our equation with parts separated
=4+13+4+45
Solving the whole number parts
4+4=8
Solving the fraction parts
13+45=?
Find the LCD of 1/3 and 4/5 and rewrite to solve with the equivalent fractions.
LCD = 15
515+1215=1715
Simplifying the fraction part, 17/15,
1715=1215
Combining the whole and fraction parts
8+1+215=9215
For number 3:
310+15=?
Find the LCD of 3/10 and 1/5 and rewrite to solve with the equivalent fractions.
LCD = 10
310+210=510
Reducing the fraction part, 5/10,
510=12
Solution by Formulas
Using the given fractions,
310+15
Applying the fractions formula for addition,
=(3×5)+(1×10)10×5
=15+1050
=2550
Simplifying 25/50, the answer is
=12
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Answers & Comments
Answer:
1. B
2. A
3. A
Step-by-step explanation:
For number 1: Just add the fractions.
For number 2:
Rewriting our equation with parts separated
=4+13+4+45
Solving the whole number parts
4+4=8
Solving the fraction parts
13+45=?
Find the LCD of 1/3 and 4/5 and rewrite to solve with the equivalent fractions.
LCD = 15
515+1215=1715
Simplifying the fraction part, 17/15,
1715=1215
Combining the whole and fraction parts
8+1+215=9215
For number 3:
Solving the fraction parts
310+15=?
Find the LCD of 3/10 and 1/5 and rewrite to solve with the equivalent fractions.
LCD = 10
310+210=510
Reducing the fraction part, 5/10,
510=12
Solution by Formulas
Using the given fractions,
310+15
Applying the fractions formula for addition,
=(3×5)+(1×10)10×5
=15+1050
=2550
Simplifying 25/50, the answer is
=12