i have a problem of understanding how to add and subtract fractions without the same denomenator

i need expert or simple explaning

                                               ADDITION OF UNLIKE FRACTIONS:-1.   We will first convert each of the given unlike fractions into their equivalent fraction having the same denominators by finding           the LCM of the denominators2.    Now, we will add the numerators. The denominator remains same.3.    Then, we will reduce the sum to lowest form.4.     If the sum of fractions is an improper fraction we will change into mixed fraction.For example,  suppose we have to add25  and   310LCM of 5 and 10 = 10Now, we will convert 25  and  310  into their equivalent fraction  having same denominator 10.25 = 2 × 25 × 2 = 410310 = 3 × 110 × 1 = 310Now,  25 + 310 = 410 + 310                                 =4 + 310                                 =710     lowest form

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fist you will have to take the L.C.M only of denominators for Ex:

57 28 910

the L.C.M of 7 8 and 10 is 560

then take the denominatorand the numerator

5 then multiply the numerator when done with denominator=5 multiplied by 80 to get the numerator=400(multiply the numerator with the number multiplied by the denominator to get the L.C.M

7 multiplied by 80 to get the L.C.M=560

do the same with other fractions

at some point of time the denominators will be same (560)

then add the numerator.

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fist you will have to take the L.C.M only of denominators for Ex:

5 7 2 8 9 10

the L.C.M of 7 8 and 10 is 560

then take the denominatorand the numerator

5 then multiply the numerator when done with denominator=5 multiplied by 80 to get the numerator=400(multiply the numerator with the number multiplied by the denominator to get the L.C.M

7 multiplied by 80 to get the L.C.M=560

do the same with other fractions

at some point of time the denominators will be same (560)

then add the numerator.

  • 0
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