Question

efetue as operaçoes indicadas de adiçao e subtraçao com denominadores iguais a)2/2+4/5 b) 1/2+4/3 c) 3/7+5/7 d) 9/2-6/2

Answer 1

Tirando o mmc
@)10/10+8/10=18/10
B) 3/6+8/6=11/6
A c e d tem fatores iguais
C) 8/7
D)3/2