Question

Un pic de ajutor la toate.

Answer 1

( 6 × 8 : 4 - 20 : 5 × 3 + 6 × 7 : 1 ) : ( 18 : 3 : 3 + 32 : 8 ) =

= ( 48 : 4 - 4 × 3 + 42 : 1 ) : ( 6 : 3 + 4 ) =

= ( 12 - 12 + 42 ) : ( 2 + 4 ) =

= ( 0 + 42 ) : 6 =

= 42 : 6 =

= 7

( 8 × 7 + 7 × 7 + 6 × 7 ) - ( 24 : 3 + 80 : 8 + 35 : 7 ) =

= ( 56 + 49 + 42 ) - ( 8 + 10 + 5 ) =

= ( 105 + 42 ) - ( 18 + 5 ) =

= 147 - 23 =

= 124

( 9 × 3 : 3 + 40 : 8 ) : 2 + 899 =

= ( 27 : 3 + 5 ) : 2 + 899 =

= ( 9 + 5 ) : 2 + 899 =

= 14 : 2 + 899 =

= 7 + 899 =

= 906

( 64 : 8 : 2 + 3 × 10 : 6 ) × ( 63 : 7 - 24 : 6 ) + 378 =

= ( 8 : 2 + 30 : 6 ) × ( 9 - 4 ) + 378 =

= ( 4 + 5 ) × 5 + 378 =

= 9 × 5 + 378 =

= 45 + 378 =

= 423.