(1)8x=24(2)x÷0.5=1.2(3)6x-4x=20.2(4)12(x+3.7)=144(5)5x-3×11=
来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/11/11 01:45:32
(1)8x=24
(2)x÷0.5=1.2
(3)6x-4x=20.2
(4)12(x+3.7)=144
(5)5x-3×11=42.
(2)x÷0.5=1.2
(3)6x-4x=20.2
(4)12(x+3.7)=144
(5)5x-3×11=42.
(1)8x=24,
8x÷8=24÷8,
x=3;
(2)x÷0.5=1.2,
x÷0.5×0.5=1.2×0.5,
x=0.6;
(3)6x-4x=20.2,
2x=20.2,
2x÷2=20.2÷2,
x=10.1;
(4)12(x+3.7)=144,
12(x+3.7)÷12=144÷12,
x+3.7-3.7=12-3.7,
x=8.3;
(5)5x-3×11=42,
5x-33=42,
5x-33+33=42+33,
5x÷5=75÷5,
x=15.
8x÷8=24÷8,
x=3;
(2)x÷0.5=1.2,
x÷0.5×0.5=1.2×0.5,
x=0.6;
(3)6x-4x=20.2,
2x=20.2,
2x÷2=20.2÷2,
x=10.1;
(4)12(x+3.7)=144,
12(x+3.7)÷12=144÷12,
x+3.7-3.7=12-3.7,
x=8.3;
(5)5x-3×11=42,
5x-33=42,
5x-33+33=42+33,
5x÷5=75÷5,
x=15.
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
3/x-1=4/x 6/x+1=x+5/x(x+1)
6/(x+1)=(x+5)/[x(x+1)] (3-x)/(x-4)+1/(4-x)=1 2/(1+x)-3/(1-x)
5x-3(2x+1)=6x-4(5-3x)求x
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)
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
x(x^2-1)+2x^2 *(x+1)-3x*(2x-5)=x(3x^2-4x)-28
X-(X/2)+(X/3)-(X/4)+(X/5)-(X/6)=1
(先化简后求值)(3x/x+2-x/x-2)+2x/x^2-4,x=4-根号5,
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
5*(x-2)=4*(x+3) 2x+(50-x)*4=140 3x-(8-x)=20*4 200x=(x-0.5)*2