Question

(OM-SP) Qual o valor de; a - b,  se a=2/3 e b= -3/5 ?

Answer 1

2/3 - (-3/5)= 2/3+3/5 = 10+9/15 = 19/15

Answer 2

Vamos lá :

a - b

a = 2/3 ; b = - 3/5

= a - b
= 2/3 - (- 3/5)
= 2/3 + 3/5

Mmc (3 , 5) = 15

= (5 * 2)/15 + (3*3)/15
= 10/15 + 9/15
= (10 + 9)/15
= 19/15   ⇒⇒ Resultado Final


Espero ter ajudado !!!