Question

1) resolva as expressões abaixo :
a ) 8 x 11 - 7 x 3 + 54 : 9 =
b ) 14 + 35 - 4 x 12 + 125:5 =
c ) 140 + 8 x 15 - 20 + 140 : 7 =
d ) 9 + 12 + 5 x 14 - 82 + 126 =

Answer 1

a )
= 8 x 11 - 7 x 3 + 54 : 9

= 88 - 21 + 6

= 88 + 6 - 21

= 94 - 21

= 73

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
b )

= 14 + 35 - 4 x 12 + 125:5 

= 49 - 48 + 25

=  1 + 25

= 26

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
c )
= 140 + 8 x 15 - 20 + 140 : 7
=  140 + 120 - 20 + 20

= 260

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
d )
= 9 + 12 + 5 x 14 - 82 + 126

= 21 + 70 + 126 - 82

= 91 + 126 - 82

= 217 - 82

= 135