7.2x+0.7×4=38.8
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7.2x+0.7×4=38.87.2x+2.8-2.8=38.8-2.87.2x=36x=5
咨询记录 · 回答于2023-03-07
7.2x+0.7×4=38.8
7.2x+0.7×4=38.87.2x+2.8-2.8=38.8-2.87.2x=36x=5
17.6x-3.6x=21
3x+5-3=26
x÷5x3=45
(x+12)÷2=24检验
17.6x-3.6x=2114x=21x=1.5
第二个x=8,第三个x=675第四个x=36
7.2x+0.7×4=38.87.2x+2.8-2.8=38.8-2.87.2x=36x=5