Rog urgent!!! Multumesc

Explicație pas cu pas:
637 - 32 : 4 × 9 - 6 × 7 + 35 : 7 =
= 637 - 8 × 9 - 42 + 5 =
= 637 - 72 - 42 + 5 =
= 565 - 42 + 5 =
= 523 + 5 =
= 528
____________________
( 49 : 7 × 5 - 30 ) + 9 × 4 - ( 402 - 395 ) =
= ( 7 × 5 - 30 ) + 9 × 4 - 7 =
= ( 35 - 30 ) + 9 × 4 - 7 =
= 5 + 9 × 4 - 7 =
= 5 + 36 - 7 =
= 41 - 7 =
= 34
____________________
8 + 8 × 8 - 8 : 8 + 88 - 8 × 8 + 88 =
= 8 + 64 - 1 + 88 - 64 + 88 =
= 72 - 1 + 88 - 64 + 88 =
= 71 + 88 - 64 + 88 =
= 159 - 64 + 88 =
= 95 + 88 =
= 183
Observații!
Succese!