8 1/2-2,25+25%= tlong bantuin kak

8 1/2 - 2,25 + 25%
=17/2 - 225/100 + 25/100
=17/2 - 9/4 + 1/4
=34/4 - 9/4 + 1/4
=26/4
=6 2/4
=6 1/2

Semoga bisa membantu...

8 1/2 - 2,25 + 25% = 17/2 - 225/100 + 25/100
= 850/100 - 225/100 + 25/100
= 625/100 + 25/100
= 650/100 = 13/2 = 6 1/2
jadi jawabannya 6 1/2