Question

a)6,5+[0,75-(8,25-1,75)]

b)-21,25+13,3

 

 

Answer 1

a)6,5+[0,75-(8,25-1,75)]

= 6,5+ (0,75- 6,5)

= 6,5+ -5,75

=0.75

b)-21,25+13,3

= -7.95

 

Answer 2

a) = 6,5 + (0,75 - 6,5) = 6,5 + 0,75 - 6,5 = 0,75

b) = -7,95

Answer 3

`a)6,5+[0,75-(8,25-1,75)]= 6,5+ (0,75- 6,5)= 6,5+ -5,75=0,75`

`b)-21,25+13,3= -7,95`

Answer 4

`a)6,5+[0,75-(8,25-1,75)]`

` = 6,5 + [ 0,75 - 6,5]`

` = 6,5 + (-5,75)`

` = 0,75`

_________________________

` b)-21,25+13,3`

` = -7,95`