Question

Calculați 25-{27 :[(36-27:3):3]+42:7×3}

Answer 1

25 - { 27 : [ ( 36 - 27 : 3 ) : 3 ] + 42 : 7 × 3 } =

25 - { 27 : [ ( 36 - 9 ) : 3 ] + 6 × 3 } =

25 - [ 27 : ( 27 : 3 ) + 18 ] =

25 - ( 27 : 9 + 18 ) =

25 - ( 3 + 18 ) =

25 - 21 = 4

Answer 2

25-{27:[(36-27:3):3]+42:7×3}

=25-{27:[(36-9):3]+6×3}

=25-[27:(27:3)+18]

=25-(27:9+18)

=25-(3+18)

=25-21

=4