x/0.7-(0.17-0.2x/0.03)=1 A.x/7-(17-2x/3)=1 B.10x/7-(17-2x/3)=1 C.10x/7-(17-20x/3)=10D.10x/7-(17-20x/3)=1 选哪个?变式.)祥细过程.

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x/0.7-(0.17-0.2x/0.03)=1A.x/7-(17-2x/3)=1B.10x/7-(17-2x/3)=1C.10x/7-(17-20x/3)=10D.10x/7-(17-20x/3)=

x/0.7-(0.17-0.2x/0.03)=1 A.x/7-(17-2x/3)=1 B.10x/7-(17-2x/3)=1 C.10x/7-(17-20x/3)=10D.10x/7-(17-20x/3)=1 选哪个?变式.)祥细过程.
x/0.7-(0.17-0.2x/0.03)=1 A.x/7-(17-2x/3)=1 B.10x/7-(17-2x/3)=1 C.10x/7-(17-20x/3)=10
D.10x/7-(17-20x/3)=1 选哪个?变式.)祥细过程.

x/0.7-(0.17-0.2x/0.03)=1 A.x/7-(17-2x/3)=1 B.10x/7-(17-2x/3)=1 C.10x/7-(17-20x/3)=10D.10x/7-(17-20x/3)=1 选哪个?变式.)祥细过程.
D
x/0.7=10x/7
0.17-0.2x/0.03=17-20x/3

D
x/0.7=10x/7
0.17-0.2x/0.03=17-20x/3

这个题有问题吧,正确答案是10x/7-(0.17-20x/3)=1
x/0.7=10x/7
0.17-0.2x/0.03=0.17-20x/3
以上第一个式只是上下同乘以10而第二个式只是对分数上下同乘100,与0.17没有关系