5x+3.4×0.5=31.7x等于多少？(x+0.5 32.95 解方程)
4.78*0.5*0.4*0.5=? 简便计算
4.78x(0.5x0.5x0.4) =4.78x0.1=0.478
简便计算 0.5*6/5x=0.03
0.5*6/5x=0.033/x=0.03 x=3/0.03 x=100
5X=3*(11.2 - x)怎么解 过程?
解:5X=3*(11.2-X)5X=3*11.2-3X5X+3X=33.68X=33.6 X=4.2
1040.2628x0.5=? 求答案
1040.2628x0.5=1040.2628x1/2=1040.2628/2=520.1314 谢谢,请采纳
x - 3.4=5的解方程和检验怎么算?
x-3.4=5 解:x-3.4+3.4=5+3.4 x=8.4 检验:把x=8.4带入得:8.4-3.4=5 正确
下面这题怎样算简便,就怎样算. 3/4 - 3/4x0.5+0.9 =
3/4-3/4*0.5+0.9=0.75-0.75*0.5+0.9=0.75*(1-0.5)+0.9=0.75*0.5+0.9=0.375+0.9=1.275
7x - 5乘0.5=57.7解方程
7X-5*0.5=57.77X-2.5=57.77X=57.7+2.57X=60.2 X=60.2÷7 X=8.6
5X - 3*5/21=5/7的解方程
5X-3*5/21=5/75X-5/7=5/7X-1/7=1/7X=1/7+1/7=2/7
0.5*X*0.4=
0.5*X*0.4=0.5*0.4*X=0.2X
列方程 3(X+0.5)=21 怎么算?
x+0.5=21÷3 x+0.5=7 x=6.5