(82一2x)÷2.5=8解方程
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答案31,x=31解:(82-2x)➗2.5x2.5=8x2.5,82-2x=20,82-2x+2x=20+2x,82=20+2x,82-20=20+2x-20,62=2x,2x=62,2x➗2=62➗2,x=31
咨询记录 · 回答于2022-11-20
(82一2x)÷2.5=8解方程
答案31,x=31解:(82-2x)➗2.5x2.5=8x2.5,82-2x=20,82-2x+2x=20+2x,82=20+2x,82-20=20+2x-20,62=2x,2x=62,2x➗2=62➗2,x=31
答案31,x=31解:(82-2x)➗2.5x2.5=8x2.5,82-2x=20,82-2x+2x=20+2x,82=20+2x,82-20=20+2x-20,62=2x,2x=62,2x➗2=62➗2,x=31
(82一2X)÷2.5=8