Best Answer

By converting them to equivalent fractions with a common denominator.

1/5 = 7/35

1/7 = 5/35

1/5 - 1/7 = 2/35

Q: How do you subtract 1 by 5 by 1 by 7?

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You can either subtract the whole number portions, then subtract the numerators, or you can convert the mixed numbers to improper fractions, subtract the numerators, and simplify. For example, 3 5/7 - 2 1/7 can be handled as 3 - 2 and 5/7 - 1/7, or as 26/7 - 15/7; either way, it's 1 4/7.

Subtract is to take away a certain portion of a number. For example, if you subtract 5 from 7 (7-5), you take off 5 parts of 7, and get 2 as your answer.

7+8x-5 = 8x+7-5x Subtract 7 from both sides: 8x-5 = 8x-5x Subtract 8x from both sides: -5 = -5x Divide both sides by -5: x = 1 So the equation implies x = 1

7 You take the lowest number and subtract it from the highest. 8-1=7

It is: 2 and 1/8 subtract 1 and 7/8 = 1/4

Related questions

You can either subtract the whole number portions, then subtract the numerators, or you can convert the mixed numbers to improper fractions, subtract the numerators, and simplify. For example, 3 5/7 - 2 1/7 can be handled as 3 - 2 and 5/7 - 1/7, or as 26/7 - 15/7; either way, it's 1 4/7.

1. Subtract 25 2. Then subtract 6 3. Then subtract 12 4. Then subtract 2 5. Then subtract 10 6. Then subtract 15 7. Then subtract 7 8. Then add 3 X 1/2 9. Then add 8

You turn the 1 into an improper fraction (7/7) that is equal to 1. 7/7 - 5/7 = 2/7

7 1/4 - 5 1/8 Change to common denominator 7 2/8 - 5 1/8 Subtract the whole numbers, then subtract the numerators of the fractions, don't subtract the denominators, just leave them as they are, and combine the results. 7-5 = 2 2-1 = 1 Answer: 2 1/8

7/8-5/8= 1/4

8 1/6 - 2 5/6 = 5 1/3. Here's how I did it. Borrow a 1 from the 8 and change it to 6/6 & add to 1/6, so you have 7 and 7/6. Subtract 5/6 from 7/6 = 2/6, which equals 1/3. Subtract 2 from 7 = 5.

Subtract is to take away a certain portion of a number. For example, if you subtract 5 from 7 (7-5), you take off 5 parts of 7, and get 2 as your answer.

7+8x-5 = 8x+7-5x Subtract 7 from both sides: 8x-5 = 8x-5x Subtract 8x from both sides: -5 = -5x Divide both sides by -5: x = 1 So the equation implies x = 1

7 You take the lowest number and subtract it from the highest. 8-1=7

To get the correct answer. If you were adding 1/5 and 1/7, you might not know that the answer is 12/35 unless you knew that 1/5 = 7/35 and 1/7 = 5/35

Let's start with an easier problem. If you want to know how many numbers are between 1 and 7, then you have 2 & 3 & 4 & 5 & 6 which is 5 numbers. If you subtract 1 from 7, then you have 6 numbers. So, to get the final answer you subtract the two original numbers and then subtract one more. In our example, 7 - 1 = 6 and 6 - 1 = 5, so the answer is 5 numbers between 1 and 7. For the given example, take 1000 - 773 to get 227, then subtract one more. So, there are 226 numbers between 773 and 1000.

(7/8)-(5/8) =2/8 =1/4 or .25