¼ ha+ 0,50ha+2⅓ha -2,25 =……

1/4 ha
(0,50=1/4)ha 
(2 1/3 = 7/3 ) ha
(2,25 = 9/4) 
jawabannya = 1/4 + 1/4 + 7/3 – 9/4 = 7/12