Maggie_09
花朵
共回答了21个问题采纳率:95.2% 举报
x-0.45=3/5÷1/4=4×3/5=12/5 x=0.45+12/5=45/100+12/5=9/20+12/5=9/20+48/20=57/20=2有17/20
5x-3x=12+12=24 2x=24 x=12 1,6x=16/10x=8/5x 8/5x-2/5x=4 6/5x=4 x=20/6======3又1/3 10.8-3/4x=4 3/4x=10.8-3=7.8 =78/10=39/5 x=39/5÷3/4=52/5=10又2/5
0.75x-0.5x=2 0.25x=2 x=2÷0.25=8 x+1/5=2.4÷0.2=12 x=12-1/5 =11又4/5
1年前
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