pllsssss. plssss plssss

Pllsssss Plssss Plssss class=

Răspuns :

54-[100-(42+10)]+25=54-[100-52]+25=54-48+25=6+25=31
9x6-[100-(7x6+10)]+5x5
=54-[100-(42+10)]+25
=54-[100-52]+25
=54-48+25
=4+25
=29