2 3/4 + 0,75-20%×1/5 =...... pake caranya diubah kepersen.jangan asal

2 ¾ + 0,75 - 20% × 1/5

= 11/4 + 75/100 - 20/100 × 1/5

= (11/4 × 25/25) + 75/100 - 4/100

= 275/100 + 75/100 - 4/100

= 350/100 - 4/100

= 346/100 × 100%

= 346%

2 3/4=11/4=275%
1/5=20%


=275%+75%-(20%×20%)
=350%-400%
=-50%