( 154 + 246 ) - 400 = 350 : ( 785 - 435 ) = 740 × ( 1000 : 100) : 10 = ( 856 - 234 - 621...

Question

( 154 + 246 ) - 400 =
350 : ( 785 - 435 ) =
740 × ( 1000 : 100) : 10 =
( 856 - 234 - 621 ) × 75 =
( 345 + 763 ) : ( 12 × 7 - 83 ) =
( 546 + 894 ) : 10 - 72 × 2 =
Помогите решить пожалуйста! И объясните как считали!

Answer 1

( 154 + 246 ) - 400 = 0
154 + 246 = 400
400 - 400 = 0 
350 / ( 785 - 435 ) = 1 
785 - 435 = 350
350 / 350 = 1 
740 * ( 1000 / 100) / 10 = 740 
1000 / 100 = 10
740 * 10 = 7400
7400 / 10 = 740
( 856 - 234 - 621 ) * 75 = 75
856 - 234 = 622
622 - 621 = 1
1 * 75 = 75
( 345 + 763 ) / ( 12 * 7 - 83 ) = 1108
345 +763 = 1108
12 * 7 = 84
84 - 83 =1
1108 / 1 = 1108
( 546 + 894 ) / 10 - 72 * 2 = 0
546 + 894 = 1440
1440 / 10 = 144
72 / 2 = 144
144 - 144 = 0