Question

1)1/2+2/4= 2)3/4-5/8= 3)2/3-3/5= 4)5/12+4/9=

Answer 1

1)$frac{1}{2} + frac{2}{4} = frac{1*2}{2*2}+frac{2}{4} =frac{2}{4}+frac{2}{4}=1$
2)$frac{3}{4}-frac{5}{8} =frac{3*2}{4*2}-frac{5}{8}=frac{6}{8}-frac{5}{8} =frac{1}{8}$
3)$frac{2}{3}-frac{3}{5} = frac{2*5}{3*5}- frac{3*3}{5*3} =frac{10}{15}- frac{9}{15} =frac{1}{15}$
4)$frac{5}{12}+ frac{4}{9} = frac{5*3}{12*3}+ frac{4*4}{9*4} =frac{15}{36}+ frac{16}{36} = frac{31}{36}$

Answer 2

1
1/2 + 2/4= 1/2*2 + 2/4 = 2/4 + 2/4 = 4/4 = 1
2.3/4-5/8 = 3/4*4 - 5/8*2 = 12/16-10/16= 2/16 = 1/8
3. 2/3 - 3/5 = 2/3*5 -3/5*3 = 10/15-9/15= 1/15
4. 5/12+4/9= 5/12*3 +4/9*4 = 15/36+ 16/36 = 31/36 = 1 1/6