Question

=
a- (7 +2.3)-8=5

b- 3-(1+3.2)= -4 ​

Answer 1

$(7 + 2.3) - 8 = 5 \\ 7 + 6 - 8 = 5 \\ 13 - 8 = 5 \\ 5 = 5$

$3 - ( 1 + 3.2) = - 4 \\ 3 - 7 = - 4 \\ - 4 = - 4.$