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75x5 75 75 75 75( )x( )

75x5 =75 +75 +75 +75+( 75)x(1 )=375

375÷75=(375x 1/25 )÷(75x 1/25 )=( 15 )÷( 3 )=( 5 ) 采纳有木有

(75+75*1.4)x=630,x=3.5.

75x(5:4+15/7-75/39)=75x(5/4+15/7-75/39)=75x(1365/1092+2340/1092-2100/1092)=75x1605/1092=120375/1092=110又1092分之255或75x(5:4+15/7-75/39)=60+35-39=56

50x=75(7.5-x)50x=75x7.5-75x125x=75x7.5x=75x7.5/125 =25x3x7.5/(25x5) =3x7.5/5 =3x5x1.5/5 =3x1.5 =4.5

75x6十75十75十75十75=75x(6+4)=75x10

75x+30=3575x=5x=1/15

75x5一75=75x(5-1)=75x4=300

75*(x+5)-(75*5+5)=75x+75*5-75*5-5=75x-5结果相差75x-5

5*15=753*25=751*75=757.5*10=750.75*100=75.希望我的回答对您有帮助

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