Question

1 . Uprość wyrażenia i oblicz :

a ) - [ - ( -4 )] - ( - 3 , 2 )

b ) 15 , 2 - [- (-10 3/4 )

c ) - 45 + [ - ( - 13 1/3)]

d ) - ( - 39 2/5) - 57

e ) - ( - 40,2) - ( - 3 , 85 )

f ) - [ - ( - 20 3/8 )] - ( - 50 )

g ) - [ - ( - 102 ) ] - ( - 5 2/7)

h ) -63 2/3 + [ - ( - 300 ) ]

Answer 1

a ) - [ - ( -4 )] - ( - 3 , 2 ) = - 4 + 3,2 = - 0,8

b ) 15 , 2 - [- (-10 3/4 ) = 15,2 - 10 3/4 = 15.2 - 10,75 = -4,45

c ) - 45 + [ - ( - 13 1/3)] = -45 + 13 1/3 = - 31 2/3

d ) - ( - 39 2/5) - 57 = 39 2/5 - 57 = 17 3/5

e ) - ( - 40,2) - ( - 3 , 85 ) = 40,2 + 3,85= 44,05

f ) - [ - ( - 20 3/8 )] - ( - 50 ) = - 20 3/8 + 50 = 29 5/8

g ) - [ - ( - 102 ) ] - ( - 5 2/7) = - 102 + 5 2/7 = - 96 5/7

h ) -63 2/3 + [ - ( - 300 ) ] = - 63 2/3 + 300 = 236 1/3