JAWAB BSK DI KUMPUL PLS sekarang ga pake lama

=4,25-1 1/4-1 1/4+1 1/2
=425/100-5/4-5/4+3/2
=425/100-125/100-125/100+150/100
=325/100
=3 25/100
=3 1/4

semoga membantu ya thx