0.75x=1.5解方程
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3x=0.75*12x=0.75*4x=3祝你开心!
x+1.5x=8(1+1.5)x=82.5x=8x=8÷2.5x=3.2
0.75/X=3/2X=0.75/(3/2)X=0.75/1.5X=0.5再问:还有一个再答:40%/X=120%/X1.2X=0.4XX=0因为分母不能为0所以无解
5x+6x(1.5x)=44.85X+9X=44.814X=44.8X=3.2
1.5/0.75=22x/3x-10=22x=6x-204x=20x=5再问:?再答:1.5/0.75=15/7.=150/75=2再问:题目是解比例,外项等于内项再答:2=2:1再问:外项的积等于内
第一题0.32(x-6.3)=10.560.32x-2.016=10.560.32x=12.576x=39.3第二题0.4x+2.6x=1.5×4.2(0.4+2.6)x=6.33x=6.3x=2.1
解(1)x-0.75x=120.25x=121/4x=12x=12×4x=48(2)2.8x+x=7.63.8x=7.6x=7.6÷3.8x=2(3)2.36x+2.64x=185x=18x=18÷5
3.5x-1.5x=3.5-x3.5x-1.5x+x=3.5(3.5-1.5+1)x=3.53x=3.5x=3.5÷3x=7/6
1.5x-x=4.750.5x=4.75x=4.75/0.5x=9.5
1.5X-X=1(1.5-1)X=10.5X=1X=1÷0.5X=2
你是没学过负号在x前还是什么?你直接把x移到左边呀,负号变正号..解得x=0.45
x+20=1.5xx-1.5x=-20-0.5x=-20x=20/0.5x=40
方程是啥?如果为:x^0.75-x^0.25=0.75令t=x^0.25,则x^0.75=t^3方程化为:t^3-t=0.75,解得:t=1.26255112740716x=t^4=2.5409486
120%:x=0.751.2:x=3:43x=4.8x=1.6
0.25x=5.6(合并同类项)x=5.6/0.25(移项)x=22.4望采纳!
3.5X—1.5X=10.82x=10.8x=5.42.36X+2.64X=185x=18x=3.6X—0.75x=120.25x=12x=482.8X+X=7.63.8x=7.6x=2
苍月Swart,你好:x-0.75x=420.25X=42X=42÷0.25X=168