42*75%+3/4*59-0.75

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42*75%+3/4*59-0.75

42*75%+3/4*59-0.75
42*75%+3/4*59-0.75

42*75%+3/4*59-0.75
42*75%+3/4*59-0.75
=42*0.75+0.75*59-0.75
=(42+59-1)*0.75
=100*0.75
=75

75

3/4(42+59-1)=75

原式=(42+59-1)×0.75
=75

(42+59-1)X0,75=75

(42*0.75)+[(3/4)*59]-0.75 =75

42*75%+3/4*59-0.75
=42*0.75+0.75*59-0.75
=(42+58+2)*0.75-0.75
=75+0.75
=75.75

42*75%+3/4*59-0.75
=(42*0.75)+(0.75*59)-0.75
=75

=(42+59-1)*3/4
=75