Q: What number can 20 and 30 both divide by?

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20/30 divide both 20 and 30 by 2 10/15... this is a equivalent fraction divide both 20 and 30 by 5 4/6... this is an equivalent fraction divide both 20 and 30 by 10 2/3... this is an equivalent fraction

Say you had to turn 9/30 in to twentieths. First you find the common denominator of 30 and 20 (the lowest thing that both of them multiply into) and then multiply the first number into it. So 9/30 would turn into 18/60, which you can then divide by 3 to get twentieths, which is 6/20.

Use algebra. 12x+30=15x-20. Add 20 to both sides. 12x+50=15x. Subtract 12x from both sides. 50=3x. Divide both sides by 3. 16.666...=x

20 and 28 both have six factors.

They are 23 and 29 which are both prime numbers

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The smallest number into which both 20 and 30 will divide evenly is 60.

20/30 divide both 20 and 30 by 2 10/15... this is a equivalent fraction divide both 20 and 30 by 5 4/6... this is an equivalent fraction divide both 20 and 30 by 10 2/3... this is an equivalent fraction

Say you had to turn 9/30 in to twentieths. First you find the common denominator of 30 and 20 (the lowest thing that both of them multiply into) and then multiply the first number into it. So 9/30 would turn into 18/60, which you can then divide by 3 to get twentieths, which is 6/20.

6 of 30 is 20%, so a 20. In letter terms, it means you failed. To calculate this on future exams, simply divide the number of correct answers by the total number of questions on the exam. On this one for example, divide 6 by 30, which is how you arrive at the answer, which is a score of 20.

150

Let the unknown number be n.Then 20 + n = 30 : Subtract 20 from both sides gives :-20 - 20 + n = 30 - 20 : n = 10

Not necessarily. When you divide by a fraction, the answer can be bigger than both of them. 6 ÷ 1/5 = 30

30

The LCM of all those numbers is 120 because it is the first number that 30, 40 and 20 divide into evenly.

Because 30 is the smallest number that both 10 and 15 can divide into evenly with no remainder.

find a number that both sides divide by, in this case 5, and divide both numbers by it, in this case to make 5:6

20 and 28 both have six factors.