Question

8x9-7x7=, =?=?=?, 40:5+7x9=?,=?,=?=/, 6x8+27:3-49=?,=?,=?,=?,=?. 200-54:9+8x9=?,= ?,=?,=?,=?,=?. 4x5:10+18:2x3=?,=?,=?,=?,=?,=?.

Answer 1

Răspuns:

1.-7

2.71

3.8

4.266

5.29

Explicație pas cu pas:

1. 8•9-7•7=

72-79=-7

2.40:5+7•9=

8+63=71

3.6•8+27:3-49=

48+9-49=

57-49=8

4.200-54:9+8•9=

200-6+72=

194+72=266

5.4•5:10+18:2•3=

20:10+9•3

2+27=29