解方程:﹙1﹚1/3﹙x+1﹚=1/7﹙2x-3﹚ ﹙2﹚2x+1/3-5x-1/6=3 ﹙3﹚0.1x+0.2/0.0
来源:学生作业帮 编辑:大师作文网作业帮 分类:数学作业 时间:2024/11/11 04:04:13
解方程:﹙1﹚1/3﹙x+1﹚=1/7﹙2x-3﹚ ﹙2﹚2x+1/3-5x-1/6=3 ﹙3﹚0.1x+0.2/0.02-x-1/0.5=3
(1) x=-16
(2) x=-17/18
(3) x=50/9
再问: 过程
再答: 1/3x+1/3=2/7x-3/7 -3x =3+1/6-1/3 0.1x+10-x-2=3 1/3x-2/7x=-1/3-3/7 -3x =17/6 -0.9x =3-8 1/21x= -16/21 x = - 17/18 -0.9x = -5 x = -16/21*21 x=50/9 x= - 16
(2) x=-17/18
(3) x=50/9
再问: 过程
再答: 1/3x+1/3=2/7x-3/7 -3x =3+1/6-1/3 0.1x+10-x-2=3 1/3x-2/7x=-1/3-3/7 -3x =17/6 -0.9x =3-8 1/21x= -16/21 x = - 17/18 -0.9x = -5 x = -16/21*21 x=50/9 x= - 16
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