Question

Oblicz :

a) (17,8+2,48)×5,05-13,85×4,2=

b) 2,75+34,25×(57,6-7,6×7,5)=

c) 72,3-2,05×(6,03×5,4-30,062)=

prosze o podanie wszystkich obliczeń .. (NIE SAM WYNIK) !!

Answer 1

a) (17,8+2,48)×5,05-13,85×4,2=20,28x5,05-13,85x4,2=102,414-58,17=44,244

 

b) 2,75+34,25×(57,6-7,6×7,5)=2,75+34,25×(57,6-57)=

=2,75+34,25×0,6=2,75+20,55=23,3

 

c) 72,3-2,05×(6,03×5,4-30,062)=72,3-2,05×(32,562-30,062)=72,3-2,05×2,5=

=72,3-5,125=67,175