Question

Resolva as expressões :a)5-7/4 ×1/2 b)2/3×1/5 +2 1/4 c)2 1/9 +4/5×2 d)3/5+2/9 ÷2/3 e)2/7×3/5 - 1/8 ÷ 5/6 f)3/4 +5/9 ÷1 g)1/2- 1/5 ÷2/1

Answer 1

A) 5-7/4.1/2=

5-7/8= MMC

40/8-7/8=

33/8

B)2/3.1/5+2.1/4=

2/1549/4 mmc

8/604135/60=

143/60

C)19/9+4/10= MMC

190/90+36/90=

226/90=

113/45

D)3/5+2/9.2/3=

3/5+6/18=

18/90+30/90=

48/90=

24/45=8/15

E)6/35-1/8.6/5=

6/35-6/40= MMC

48/280-427280=

6/280=

3/140

F)3/4+5/9.1/1=

3/4+5/9=

27/36+20/36=

47/20


G)1/2-1/5.1/2=

1/2-1/10=

5/10-1/10=

4/10=2/5