Tolong dijawab pake cara dan tolong jawab no 2,3,4,5.makasih banyak yang udh jawab

Tolong dijawab pake cara dan tolong jawab no 2,3,4,5.makasih banyak yang udh jawab

2. 6/9 + a/9 = 1

6/9 + a/9 = 9/9

a/9 = 9/9 – 6/9

a/9 = 3/9

a = 3

3. 2/5 + 1/3

= (2×3 + 1×5)/(5×3)

= ( 6 + 5 )/15

= 11/15

4. 2 5/6 + 1¼

= 17/6 + 5/4

= (17×4 + 5×6)/(6×4)

= ( 68 + 30 )/24

= 98/24

= 4 2/24

= 4 1/12

5. 2/3 – 7/15

= (2×15 – 7×3)/(3×15)

= (30 – 21)/45

= 9/45

= (9:9)/(45:9)

= 1/5

$frac{6}{9} + frac{a}{9} = 1 \ frac{6}{9} + frac{3}{9} = frac{9}{9} = 1$
Jawaban : a

3.
$frac{2}{5} + frac{1}{3} = \ frac{6}{15} + frac{5}{15} = \ \ frac{11}{15}$
Jawaban : C

4.
$2 frac{5}{6} + 1 frac{1}{4} = \ 2frac{10}{12} + 1 frac{3}{12} = \ 3frac{13}{12} = 4 frac{1}{12}$
Jawaban : a

5.
$frac{2}{3} - frac{7}{15} = \ frac{10}{15} - frac{7}{15} = \ frac{3}{15} = frac{1}{5}$
Jawaban : d