0.4(x-0.2)+m=0.7x一0.38的解x=6,求m等于多少?
问题描述:
0.4(x-0.2)+m=0.7x一0.38的解x=6,求m等于多少?
答
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确定是对的吗?