解方程x-12分之2x+1=1-4分之3x-2和1/2[x-1/2(x-1)]=2/3(x-1)

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/19 15:27:35
解方程x-12分之2x+1=1-4分之3x-2和1/2[x-1/2(x-1)]=2/3(x-1)
x){|i;54zdgQ g\ktRQ4PԌ57l3Iv6Tr> Ov,yo瓝3 !n24uZVhA "@_۲(m8lB\əoکoC9 )[6LT\[s}3@ A8F 16`NӮ|ڿgbP1$]G

解方程x-12分之2x+1=1-4分之3x-2和1/2[x-1/2(x-1)]=2/3(x-1)
解方程x-12分之2x+1=1-4分之3x-2
和1/2[x-1/2(x-1)]=2/3(x-1)

解方程x-12分之2x+1=1-4分之3x-2和1/2[x-1/2(x-1)]=2/3(x-1)
x-12分之2x+1=1-4分之3x-2 两边乘12
12x-2x-1=12-9x+6
10x-1=18-9x
10x+9x=18+1
19x=19
x=1
1/2[x-1/2(x-1)]=2/3(x-1)
1/2x-1/4x+1/2=2/3x-2/3
1/4x+1/2=2/3x-2/3
2/3x-1/4x=1/2+2/3
5/12x=7/6
x=7/6÷5/12
x=7/10

X=-1加根号6,或X=-1减根号6