54:(21-15)*8-63:7-(134-128)=

Question

54:(21-15)*8-63:7-(134-128)=

Comments

57

Answer 1

=54:6×8-9-6=9×8-15=57

Comments

57

Answer 2

54:(21-15)*8-63:7-(134-128)=57

1)21-15=6

2)134-128=6

3)54:6=9

4)9*8=72

5)63:7=9

6)72-9=63

7)63-6=57

Comments

Спасибо большое