Vanessar3143
27.09.2021 •
Mathematics
BRAINLIEST TO CORRECT PLEASE
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Ответ:
3 6/4 or 18/4
Step-by-step explanation:
1 3/4+2 3/4= 1+2 and 3/4+3/4
1+2=3
3/4+3/4= (3+3= 6 )6/4
3+6/4= 3 6/4 or 18/4
STUDENTS MISTAKE:
they added the denominators
Ответ:
Their mistake was that they didn't add the denominators.
Here's a step by step solution correctly:
1. Add
a. Convert mixed number to improper fraction
1 3/4 = 1 x 4/4 + 3/4 = 4 + 3/ 4 = 7/4
b. Convert mixed number to improper fraction
2 3/4 = 2 x 4/4 + 3/4 = 8 + 3 / 4 = 11/4
c. Add
7/4 + 11/4 = 7+11/4 = 18/4
2. Simplify
18/4 = 9/2 = 4 1/2
a. Reduce fraction to lowest terms
18/4 = 18 ÷ 2/4 ÷ 2 = 9/2
2 is the greatest common divisor of 18 and 4. Reduce by dividing both numerator and denominator by 2.
b. Convert improper fraction to mixed number
9/2 = 4 1/2
9 ÷ 2 = 4 remainder 1
Ответ:
One
Step-by-step explanation: