3 years ago

30-[11+{18-(48÷8×2)}+7]+15

Mathematics

1 answer:

Inessa05 [86]3 years ago

3 0

30-(11+(18-(48/8×2))+7)+15

= 30-(11+(18-12)+7)+15

= 30-(11+6+7)+15

= 30-24+15

= 21

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