解方程. 6x+10.8=40.8 1.2x÷2=60&nbs...
解方程.6x+10.8=40.81.2x÷2=6016×0.5+3x=1430x+15x=22.5x-(0.25-0.025)=1(x-4)×0.25=10....
解方程. 6x+10.8=40.8 1.2x÷2=60 16×0.5+3x=14 30x+15x=22.5 x-(0.25-0.025)=1 (x-4)×0.25=10.
展开
1个回答
展开全部
(1)6x+10.8=40.8,
6x+10.8-10.8=40.8-10.8,
6x=30,
6x÷6=30÷6,
x=5;
(2)1.2x÷2=60,
1.2x÷2×2=60×2,
1.2x=120,
1.2x÷1.2=120÷1.2,
x=100;
(3)16×0.5+3x=14,
8+3x=14,
8+3x-8=14-8,
3x=6,
3x÷3=6÷3,
x=2;
(4)30x+15x=22.5,
45x=22.5,
45x÷45=22.5÷45,
x=0.5;
(5)x-(0.25-0.025)=1,
x-0.225=1,
x-0.225+0.225=1+0.225,
x=1.225;
(6)(x-4)×0.25=10,
0.25x-0.25×4=10,
0.25x-1=10,
0.25x-1+1=10+1,
0.25x=11,
0.25x÷0.25=11÷0.25,
x=44.
6x+10.8-10.8=40.8-10.8,
6x=30,
6x÷6=30÷6,
x=5;
(2)1.2x÷2=60,
1.2x÷2×2=60×2,
1.2x=120,
1.2x÷1.2=120÷1.2,
x=100;
(3)16×0.5+3x=14,
8+3x=14,
8+3x-8=14-8,
3x=6,
3x÷3=6÷3,
x=2;
(4)30x+15x=22.5,
45x=22.5,
45x÷45=22.5÷45,
x=0.5;
(5)x-(0.25-0.025)=1,
x-0.225=1,
x-0.225+0.225=1+0.225,
x=1.225;
(6)(x-4)×0.25=10,
0.25x-0.25×4=10,
0.25x-1=10,
0.25x-1+1=10+1,
0.25x=11,
0.25x÷0.25=11÷0.25,
x=44.
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询