Question

por favor me ajudem tenho q entregar amanha ​

Answer 1

Resposta:

A) 3/8 + 5/12 = 3×3/8×3 + 5×2/12×2 =

9/24 + 10/24 = 19/24

B) 7/4 + 8/3 = 7×3/4×3 + 8×4/3×4 =

21/12 + 32/12 = 53 /12

C)6/17 + 21/30 = 6/17 + 21÷3 /30÷3 =

6× 10/17×10 + 7×17/17×10 =179/170

D)2/5+8/6= 2/5 + 8÷2/6÷2= 2×3/5×3 + 4×5/3×5= 26/15

Espero ter ajudado