0.4(x-0.2)+m=0.7x一0.38的解x=6,求m等于多少?

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0.4(x-0.2)+m=0.7x一0.38的解x=6,求m等于多少?

0.4(x-0.2)+m=0.7x一0.38的解x=6,求m等于多少?
0.4(x-0.2)+m=0.7x一0.38的解x=6,求m等于多少?

0.4(x-0.2)+m=0.7x一0.38的解x=6,求m等于多少?
将x=6代入,
0.4(6-0.2)+m=0.7*6-0.38,
2.32+m =3.82,
m=3.82-2.32=1.5

0.4(6-0.2)+m=0.7*6一0.38
0.4*5.8+m=5.6-0.38
m=2.9

5.4*0.4+m=4.2-0.38
m=1.5

将x=6代入原方程得:0.4×5.8+m=4.2-0.38
23.2+m=3.82
m=-19.38

2.9