解方程:①6x/3=2.7 ②4(3-x)/6=1.8 ③9(x+3)/2=18 ④2(5-x)+2-6=10x
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/08/17 22:26:54
解方程:①6x/3=2.7 ②4(3-x)/6=1.8 ③9(x+3)/2=18 ④2(5-x)+2-6=10x
第二题检验!
第二题检验!
![解方程:①6x/3=2.7 ②4(3-x)/6=1.8 ③9(x+3)/2=18 ④2(5-x)+2-6=10x](/uploads/image/z/15208024-40-4.jpg?t=%E8%A7%A3%E6%96%B9%E7%A8%8B%EF%BC%9A%E2%91%A06x%2F3%3D2.7+%E2%91%A14%EF%BC%883-x%EF%BC%89%2F6%3D1.8+%E2%91%A29%EF%BC%88x%2B3%EF%BC%89%2F2%3D18+%E2%91%A32%EF%BC%885-x%EF%BC%89%2B2-6%3D10x)
①
6x/3=2.7
6x=8.1
x = 1.35
②
4(3-x)/6=1.8
4(3-x)=10.8
12 - 4x =10.8
4x = 1.2
x = 0.3
检验:
4(3-0.3)/6
=(12 - 1.2) /6
=10.8 /6
=1.8
③
9(x+3)/2=18
9(x+3) = 36
9x + 27 = 36
9x = 9
x = 1
④
2(5-x)+2-6=10x
10 - 2x - 4 = 10x
12x = 6
x = 1/2
6x/3=2.7
6x=8.1
x = 1.35
②
4(3-x)/6=1.8
4(3-x)=10.8
12 - 4x =10.8
4x = 1.2
x = 0.3
检验:
4(3-0.3)/6
=(12 - 1.2) /6
=10.8 /6
=1.8
③
9(x+3)/2=18
9(x+3) = 36
9x + 27 = 36
9x = 9
x = 1
④
2(5-x)+2-6=10x
10 - 2x - 4 = 10x
12x = 6
x = 1/2
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)
解方程①(x+3/x-1)²-5(x+3/x-1)+6=0 ②x²-2/x+3-6x+18/x
解方程:(x+3)/(x+2)-(x+5)/(x+4)=(x+7)/(x+6)-(x+9)/(x+8)
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
解方程:(x-2)(x^2-6x-9)=x(x-5)(x-3)
解方程(x-2)/(x-3)-(x-3)/(x-4)=(x-5)/(x-6)-(x-6)/(x-7)
解方程:2x+4x+6x...+100x=1-(x+3x+5x+...+99x)
解方程 x+2/x+1+x+8/x+7=x+6/x+5+x+4/x+3
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
(x+1分之x+6)-(x^+3x+2分之3x^+10x+4)+(x+2分之2x+1)=0,解这个方程
x+1分之x+2减去x+3分之x+4=x+5分之x+6减去X+7分之x+8 (解方程)
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8