kak tolong dong bantu aku nomor 1 pleaseee buat besok

a. 1/5 + 3/7 = 7+15/35 (disamakan penyebutnya) = 22/35

b. 4 1/3 + 3/4 = 13/3 + 3/4 = 52+9/12 = 61/12

c. 2/4 - 2/5 = 15-8/20 = 7/20

d. 1/2 - 1/3 = 3-2/6 = 1/6

jadikan jawaban terbaik ya :)

a.1 + 3 = 4 , 5 + 7 = 12 berarti jawabannya 4/12 [4 per 12 ]
b.7/3 + 4/3 = 7 + 4 = 11 , 3 + 3 = 6 . = 11/6
c.3/4 - 2/5 = 3x5=15 , 4x2=8 . = 15-8=7
d.1/2 - 1/3 = 1x3=3 , 1x2=2 , = 3-2=1