1.pengurangan pecahan A.15,2/3 - 7,3/4 B.6,1/3 - 8,2/3 C.5,1/6 - 13,2/3 D.7 - ... = 5,3/7 E.10,2/3 - ... = 5,1/5 2.Penjumlahan pecahan A.2/3 + ... = 5/6 B.2,1/5

15 ⅔ - 7 ¾
= 47/3 - 31/4
= 95/12
= [tex] 7 \frac{11}{12} [/tex]

6 ⅓ - 8 ⅔
= 19/3 - 26/3
= - 7/3

5 ⅙ - 13 ⅔
= 31/6 - 41/3
= - 17/2
= - 8 ½

7 - x = 5 [tex] \frac{3}{7} [/tex]
x = 7 - 38/7
x = 11/7
x = 1 [tex] \frac47 [/tex]

10 ⅔ - x = 5 ⅕
x = 32/3 - 26/5
x = 82/15
x = 5 [tex] \frac{7}{15} [/tex]

Penjumlahan
⅔ + x = ⅚
x = ⅚ - ⅔
x = ⅙

2 ⅕ + x = 5 ³/₇
x = 38/7 - 11/5
x = 3 [tex] \frac8{35} [/tex]