15X-2.5=11.5 3(x+2)=39 x-3/5x=6/5 4.9÷7/2-5x=0.8 8/5÷x=16 4x1.25-6x=3.2写完全对再加分15X-2.5=11.5 3(x+2)=39 x-3/5x=6/5 4.9÷7/2-5x=0.8 8/5÷x=16 4x1.25-6x=3.2 是方程啊
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/22 14:41:40
![15X-2.5=11.5 3(x+2)=39 x-3/5x=6/5 4.9÷7/2-5x=0.8 8/5÷x=16 4x1.25-6x=3.2写完全对再加分15X-2.5=11.5 3(x+2)=39 x-3/5x=6/5 4.9÷7/2-5x=0.8 8/5÷x=16 4x1.25-6x=3.2 是方程啊](/uploads/image/z/992554-34-4.jpg?t=15X-2.5%3D11.5+3%28x%2B2%29%3D39+x-3%2F5x%3D6%2F5+4.9%C3%B77%2F2-5x%3D0.8+8%2F5%C3%B7x%3D16+4x1.25-6x%3D3.2%E5%86%99%E5%AE%8C%E5%85%A8%E5%AF%B9%E5%86%8D%E5%8A%A0%E5%88%8615X-2.5%3D11.5+3%28x%2B2%29%3D39+x-3%2F5x%3D6%2F5+4.9%C3%B77%2F2-5x%3D0.8+8%2F5%C3%B7x%3D16+4x1.25-6x%3D3.2+%E6%98%AF%E6%96%B9%E7%A8%8B%E5%95%8A)
15X-2.5=11.5 3(x+2)=39 x-3/5x=6/5 4.9÷7/2-5x=0.8 8/5÷x=16 4x1.25-6x=3.2写完全对再加分15X-2.5=11.5 3(x+2)=39 x-3/5x=6/5 4.9÷7/2-5x=0.8 8/5÷x=16 4x1.25-6x=3.2 是方程啊
15X-2.5=11.5 3(x+2)=39 x-3/5x=6/5 4.9÷7/2-5x=0.8 8/5÷x=16 4x1.25-6x=3.2
写完全对再加分
15X-2.5=11.5 3(x+2)=39 x-3/5x=6/5 4.9÷7/2-5x=0.8 8/5÷x=16 4x1.25-6x=3.2 是方程啊
15X-2.5=11.5 3(x+2)=39 x-3/5x=6/5 4.9÷7/2-5x=0.8 8/5÷x=16 4x1.25-6x=3.2写完全对再加分15X-2.5=11.5 3(x+2)=39 x-3/5x=6/5 4.9÷7/2-5x=0.8 8/5÷x=16 4x1.25-6x=3.2 是方程啊
15X-2.5=11.5
15X=11.5+2.5
15X=14
X=14/15;
3(x+2)=39
X+2=39/3
X+2=13
X=13-2
X=11
x-(3/5)x=6/5
(5/5-3/5) x=6/5
(2/5)x=6/5
2x=6
x=6/2
x=3
4.9÷7/2-5x=0.8
0.7/2=5x+0.8
5x=0.7/2-0.8
5x=0.35-0.8
x=-0.45/5=-0.09
8/5÷x=16
8/5=16x
x=(8/5)/16 =1/10
4*1.25-6x=3.2
5-6x=3.2
6x=5-3.2
6x=1.8
x=1.8/6=0.3
4X×1.25-6X=3.2
5X-6X=3.2
-X=3.2
X=-3.2
3(x+2)=39
15X-2.5=11.5
15X=11.5+2.5
15X=14
X=14/15;
3(x+2)=39
X+2=39/3
X+2=13
X=13-2
X=11
x-(3/5)x=6/5
(5/5-3/5) x=6/5
(2/5)x=6/5
2x=6
x=6/2
x=3
4.9...
全部展开
15X-2.5=11.5
15X=11.5+2.5
15X=14
X=14/15;
3(x+2)=39
X+2=39/3
X+2=13
X=13-2
X=11
x-(3/5)x=6/5
(5/5-3/5) x=6/5
(2/5)x=6/5
2x=6
x=6/2
x=3
4.9÷7/2-5x=0.8
0.7/2=5x+0.8
5x=0.7/2-0.8
5x=0.35-0.8
x=-0.45/5=-0.09
8/5÷x=16
8/5=16x
x=(8/5)/16 =1/10
4*1.25-6x=3.2 ?
5-6x=3.2
6x=5-3.2
6x=1.8
收起
x=(11.5+2.5)/25=0.56 x=39/3-2=11 x=6/5÷(1-3/5)=3 x=(0.8-4.9÷7/2)/(-5)=0.12
8/5x=16 x=16*5/8=10 x=(3.2- 4x1.25)/(-6)=0.3