What is 1/2 + 3/8?

2 Answers
Sep 19, 2015

7/878

Explanation:

The solve the calculation, both numerator and denominator of 1/212 is multiplied by 44 so that its denominator is equal to 88. And the
you can solve directly the calculation;

=(1/2xx4/4)+3/8=(12×44)+38

=4/8+3/8=48+38

=7/8=78

Sep 19, 2015

The answer is 7/878.

Explanation:

In order to add fractions, the denominators must be the same.

1/2+3/812+38

Find the least common denominator by prime factorization.

2 : color(red)22:2

8 : color(red)2, color(blue)2, color(blue)28:2,2,2

To determine the least common denominator (LCD), multiply the common factor color(red)22 times the other factors in blue.

LCD==color(red)2xxcolor(blue)2xxcolor(blue)2=82×2×2=8

Multiply 1/212 times 4/444 so that it will have a denominator of 88.

1/2xx4/4+3/8=12×44+38=

4/8+3/8=7/848+38=78