0.3x+3*1.5=9
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0.3x+3*1.5=90.3x+4.5=90.3x=9-4.50.5x=4.5x=9
咨询记录 · 回答于2022-11-09
0.3x+3*1.5=9
0.3x+3*1.5=90.3x+4.5=90.3x=9-4.50.5x=4.5x=9
0.3x+3*1.5=90.3x+4.5=90.3x=9-4.50.5x=4.5x=9解得x=9
15x-x＝28
15x-x＝2814x=28x=2
7x-16×4＝27
7x-16×4＝277x=27+647x=91
7x-16×4＝277x=27+647x=91x=91/7
这道题还是不明白
7x-16×4＝277x-64=277x=27+647x=91x=91/7
x÷1.2＝60
x÷1.2＝60x=60*1.2x=72
x÷1.2＝60x=60*1.2x=72
1-x＝0.25
1-x＝0.251-0.25=x0.75=xx=0.75
2x-6.2＝2.18
2x-6.2＝2.182x=2.18+6.22x=8.38x=4.19
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