解方程:(5+x)÷2=4×(x-2)
2个回答
展开全部
(5 + x)÷ 2 = 4 × (x - 2)
解:两边乘以 2 得:
5 + x = 4 × (x - 2)× 2
5 + x = 8 × (x - 2)
5 + x = 8 x - 16
5 + 16 = 8 x - x
21 = 7 x
x = 21 ÷ 7
x = 3
(3.2 - x)÷ 2 = 6.8
解:两边乘以 2 得:
3.2 - x = 13.6
- x = 13.6 - 3.2
- x = 10.4
x = - 10.4
【俊狼猎英】团队为您解答
解:两边乘以 2 得:
5 + x = 4 × (x - 2)× 2
5 + x = 8 × (x - 2)
5 + x = 8 x - 16
5 + 16 = 8 x - x
21 = 7 x
x = 21 ÷ 7
x = 3
(3.2 - x)÷ 2 = 6.8
解:两边乘以 2 得:
3.2 - x = 13.6
- x = 13.6 - 3.2
- x = 10.4
x = - 10.4
【俊狼猎英】团队为您解答
追问
对不起第二题打错了,是:4(3.2-x)÷2=6.8
追答
4(3.2 - x)÷ 2 = 6.8
解:两边乘以 2 得:
4(3.2 - x)= 13.6
3.2 - x = 13.6 ÷ 4
3.2 - x = 3.4
- x = 3.4 - 3.2
- x = 0.2
x = - 0.2
【俊狼猎英】团队为您解答
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