Calcule o valor da expressão numérica
Anexos:
Soluções para a tarefa
Respondido por
8
a) (3/2-2/5)+(5/4-2/3)
= 15-4/10 + 15-8/12
= 11/10 + 7/12
= 66+35/60
= 101/60
b) (7/8-5/6)+(8/9-7/9)
= 21-20/24 + 8-9/9
= 1/25+1/9
= 11/72
c) (3/4+4/3).(8/7-7/8)
= 9+16/12 . 64-49/56
= 25/12 . 15/56
= 25/4 . 5/56
= 125/224
= 15-4/10 + 15-8/12
= 11/10 + 7/12
= 66+35/60
= 101/60
b) (7/8-5/6)+(8/9-7/9)
= 21-20/24 + 8-9/9
= 1/25+1/9
= 11/72
c) (3/4+4/3).(8/7-7/8)
= 9+16/12 . 64-49/56
= 25/12 . 15/56
= 25/4 . 5/56
= 125/224
juliarafaellepe3e9q:
Muito obrigada
Perguntas interessantes