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Popular Pre Algebra >

3/2-(1/8)/(8/5)

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Solution

3/2−(1/8)/(8/5)

Solution

16427​
+1
Decimal
1.421875
Solution steps
3/2−(1/8)/(8/5)
Follow the PEMDAS order of operations
Calculate within parentheses (1/8):81​
1/8
1/8=81​=81​
=3/2−81​/(8/5)
Calculate within parentheses (8/5):58​
8/5
8/5=58​=58​
=3/2−81​/58​
Multiply and divide (left to right) 3/2:23​
3/2
3/2=23​=23​
=23​−81​/58​
Multiply and divide (left to right) 81​/58​:645​
81​/58​
Apply the fraction rule: ba​÷dc​=ba​×cd​=81​⋅85​
Multiply fractions: ba​⋅dc​=b⋅da⋅c​=8⋅81⋅5​
Multiply the numbers: 1⋅5=5=8⋅85​
Multiply the numbers: 8⋅8=64=645​
=23​−645​
Add and subtract (left to right) 23​−645​:6491​
23​−645​
23​−645​=6491​
23​−645​
Least Common Multiplier of 2,64:64
2,64
Least Common Multiplier (LCM)
Prime factorization of 2:2
2
2 is a prime number, therefore no factorization is possible=2
Prime factorization of 64:2⋅2⋅2⋅2⋅2⋅2
64
64divides by 264=32⋅2=2⋅32
32divides by 232=16⋅2=2⋅2⋅16
16divides by 216=8⋅2=2⋅2⋅2⋅8
8divides by 28=4⋅2=2⋅2⋅2⋅2⋅4
4divides by 24=2⋅2=2⋅2⋅2⋅2⋅2⋅2
Multiply each factor the greatest number of times it occurs in either 2 or 64=2⋅2⋅2⋅2⋅2⋅2
Multiply the numbers: 2⋅2⋅2⋅2⋅2⋅2=64=64
Adjust Fractions based on the LCM
Multiply each numerator by the same amount needed to multiply its
corresponding denominator to turn it into the LCM 64
For 23​:multiply the denominator and numerator by 3223​=2⋅323⋅32​=6496​
=6496​−645​
Since the denominators are equal, combine the fractions: ca​±cb​=ca±b​=6496−5​
Subtract the numbers: 96−5=91=6491​
=6491​
=6491​
Convert improper fractions to mixed numbers:6491​=16427​
6491​=1Remainder27
6491​
Write the problem in long division format64∣91​​
Divide 91by 64to get 1
Divide 91by 64to get 1164∣91​​
Multiply the quotient digit (1)by the divisor 64164∣91​64​​
Subtract 64from 91164∣91​64​27​
164∣91​64​27​
The solution for Long Division of 6491​is 1with remainder of 271Remainder27
Convert to mixed number: QuotientDivisorRemainder​6491​=16427​
=16427​
=16427​

Popular Examples

32\div 4^2-2-(-4+6-1)2\div 5(-8)-(1)^2-6(1)+1(3(6-4)^2)/2

Frequently Asked Questions (FAQ)

  • What is 3/2-(1/8)/(8/5) ?

    The solution to 3/2-(1/8)/(8/5) is 1 27/64

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