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abagailb03
21.09.2019 •
Mathematics
Solve the equation
-3 2/3+b = 8 1/5
b= 5 3/5
b= 4 4/5
b= 11 3/5
b= 11 1/5
Solved
Show answers
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Ответ:
11 13/15
Step-by-step explanation:
-3 2/3+b = 8 1/5
Add 3 2/3 to each side
-3 2/3 + 3 2/3+b = 8 1/5+ 3 2/3
b = 8 1/5 + 3 2/3
We need to get a common denominator of 15
8 1/5 = 8 3/15
3 2/3 = 3 10/15
11 13/15
Ответ:
Result:
3 1/8 + 2 3/8 - 1 1/4 = 17
4
= 41
4
= 4.25
Spelled result in words is seventeen quarters (or four and one quarter).
How do you solve fractions step by step?
Conversion a mixed number 3 1
8
to a improper fraction: 3 1/8 = 3 1
8
= 3 · 8 + 1
8
= 24 + 1
8
= 25
8
To find new numerator:
a) Multiply the whole number 3 by the denominator 8. Whole number 3 equally 3 * 8
8
= 24
8
b) Add the answer from previous step 24 to the numerator 1. New numerator is 24 + 1 = 25
c) Write previous answer (new numerator 25) over the denominator 8.
Three and one eighth is twenty-five eighths
Conversion a mixed number 2 3
8
to a improper fraction: 2 3/8 = 2 3
8
= 2 · 8 + 3
8
= 16 + 3
8
= 19
8
To find new numerator:
a) Multiply the whole number 2 by the denominator 8. Whole number 2 equally 2 * 8
8
= 16
8
b) Add the answer from previous step 16 to the numerator 3. New numerator is 16 + 3 = 19
c) Write previous answer (new numerator 19) over the denominator 8.
Two and three eighths is nineteen eighths
Add: 25
8
+ 19
8
= 25 + 19
8
= 44
8
= 4 · 11
4 · 2
= 11
2
For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of the both denominators - LCM(8, 8) = 8. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 8 × 8 = 64. In the next intermediate step cancelling by a common factor of 4 gives 11
2
.
In words - twenty-five eighths plus nineteen eighths = eleven halfs.
Conversion a mixed number 1 1
4
to a improper fraction: 1 1/4 = 1 1
4
= 1 · 4 + 1
4
= 4 + 1
4
= 5
4
To find new numerator:
a) Multiply the whole number 1 by the denominator 4. Whole number 1 equally 1 * 4
4
= 4
4
b) Add the answer from previous step 4 to the numerator 1. New numerator is 4 + 1 = 5
c) Write previous answer (new numerator 5) over the denominator 4.
One and one quarter is five quarters
Subtract: the result of step No. 3 - 5
4
= 11
2
- 5
4
= 11 · 2
2 · 2
- 5
4
= 22
4
- 5
4
= 22 - 5
4
= 17
4
For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of the both denominators - LCM(2, 4) = 4. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 2 × 4 = 8. In the next intermediate step the fraction result cannot be further simplified by cancelling.
In words - eleven halfs minus five quarters = seventeen quarters.