0.4x-3.8=7.4 1.6×5+2x=12.6 3.2x+2.8x=4.8 【x-5]x8=5.6 13【2x+3
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/05/09 19:53:55
0.4x-3.8=7.4 1.6×5+2x=12.6 3.2x+2.8x=4.8 【x-5]x8=5.6 13【2x+3x】=169
0.4x - 3.8 = 7.4
0.4x = 7.4 + 3.8
0.4x = 11.2
x = 11.2 ÷ 0.4
x = 28
1.6 × 5 + 2x = 12.6
8 + 2x = 12.6
2x = 12.6 - 8
2x = 4.6
x = 4.6 ÷ 2
x = 2.3
3.2x + 2.8x = 4.8
6x = 4.8
x = 4.8 ÷ 6
x = 0.8
(x - 5) × 8 = 5.6
x - 5 = 5.6 ÷ 8
x - 5 = 0.7
x = 0.7 + 5
x = 5.7
13(2x + 3x) = 169
5x = 169 ÷ 13
5x = 13
x = 13 ÷ 5
x = 2.6
0.4x = 7.4 + 3.8
0.4x = 11.2
x = 11.2 ÷ 0.4
x = 28
1.6 × 5 + 2x = 12.6
8 + 2x = 12.6
2x = 12.6 - 8
2x = 4.6
x = 4.6 ÷ 2
x = 2.3
3.2x + 2.8x = 4.8
6x = 4.8
x = 4.8 ÷ 6
x = 0.8
(x - 5) × 8 = 5.6
x - 5 = 5.6 ÷ 8
x - 5 = 0.7
x = 0.7 + 5
x = 5.7
13(2x + 3x) = 169
5x = 169 ÷ 13
5x = 13
x = 13 ÷ 5
x = 2.6
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
(5x-15)X8=72
25%x=16x8分之5,
(5x一12)x8=24 (100-3x)÷2=8
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
2x+3x+4x+5x+x+6x+7x=100
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
(5x+3)x8=24解方程
5[x^2-x]=3[x^2+x]
(2x-1)/(x-1)(x-2)=(x-5)/(x-2)(x-3) x/2x^2-11x-21=(x+7)/x^2-1