3.8x-x=42怎么解?

来源：学生作业帮助网编辑：六六作业网时间：2024/12/23 22:46:47

3.8x-x=42怎么解?3.8x-x=42怎么解?3.8x-x=42怎么解?3.8x-x=42(3.8-1)x=422.8x=42x=42÷2.8x=152.8x=42X=153.8x-x=422.

3.8x-x=42怎么解?
3.8x-x=42怎么解?

3.8x-x=42怎么解?
3.8x-x=42
(3.8-1)x=42
2.8x=42
x=42÷2.8
x=15

2.8x=42
X=15

3.8x-x=42
2.8x=42
x=42/2.8
x=15

3.8x-x=42
(3.8-1)x=42
2.8x=42
x=42÷2.8
x=15

3.8X-X=42
解:2.8X=42
X=42÷2.8
X=15
说明:2.8X是因为3.8X-X而得来的,两个X的数值都是一样的.42÷2.8是因为除法的性质!!
懂了吧!

3.8x-x=42怎么解? 3.8x-x=42怎么解? x-0.8x=42怎么解 x-15%x=42 500怎么解x x*x-x=90怎么解 x^2=(x+30)X(x-18)怎么解 x 5x=21.6-x-5x怎么解 (x+12)*(x+12)=x*x+360怎么解 x-(30-x)=(30-x)-x/3,怎么解 x*x=(x+10)*(x-6)怎么解 x(x+x)=48 求x 怎么解 (x+x+23+x+50)=3x 怎么解 x*x=75%x*(x+3)怎么解? (168+X)/(288+X)=(120-X)/X怎么解 x*x+2*x+1=36,x怎么解, x(x+1)-x(x-1)=188怎么解, 25%X+(144-x)=x-25%X怎么解 x(x+1)-x(x-1)=188怎么解,