Question

efetue as operações indicadas de adição e subtraia com denominadores iguais
2/5 +4/5
1/3+4/3
3/7+5/7
9/2-6/2
7/5-6/5

Answer 1

a) 2/5 + 4/5 = 6/5; b) 1/3 + 4/3 = 5/3; c) 3/7 + 5/7 = 8/7; d) 9/2 - 6/2 = 3/2; e) 7/5 - 6/5 = 1/5