2.8x+x=1.71 30x+15x=22.5 2.8+2x=22.6 22.6-2x=2.8 (0.23-0.19)
来源:学生作业帮 编辑:大师作文网作业帮 分类:数学作业 时间:2024/11/14 03:54:52
2.8x+x=1.71 30x+15x=22.5 2.8+2x=22.6 22.6-2x=2.8 (0.23-0.19)x 40×4+2x=400 62×2+2x=358 解方程 急
(1)2.8x+x=1.71
3.8x=1.71
x=0.45
(2)30x+15x=22.5
45X = 22.5
X= 0.5
(3) 2.8+2x=22.6
2X= 22.6-2.8
2X=19.8
X =9.9
(4) 22.6-2x=2.8
-2X = -22.6+.2.8
-2X=-19.8
X =9.9
(5)(0.23-0.19)x 40×4+2x=400
6.4+ 2X =400
2X = 400-6.4
X =196.8
(6) 62×2+2x=358
124 +2X =358
2X =358- 124
2X= 234
X = 117
3.8x=1.71
x=0.45
(2)30x+15x=22.5
45X = 22.5
X= 0.5
(3) 2.8+2x=22.6
2X= 22.6-2.8
2X=19.8
X =9.9
(4) 22.6-2x=2.8
-2X = -22.6+.2.8
-2X=-19.8
X =9.9
(5)(0.23-0.19)x 40×4+2x=400
6.4+ 2X =400
2X = 400-6.4
X =196.8
(6) 62×2+2x=358
124 +2X =358
2X =358- 124
2X= 234
X = 117
已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值
(X+X)+(X-X)+(X*X)+(X/X)=100
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
x/x平方-x+2=2x/x+1
x+x=x+15
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
x^2=(x+30)X(x-18)怎么解
3/2x-2.8+x=0.
f(x)=x²+3x|x-2|
解方程求x 2(3x+15)-2x=76 12x+2=2.8×5+8x 2x+x除以2=22.5 3x+4.5=7x-1
f(x)=-x^2+2x(x>0) 0(x=0) x^2-2x(x