3.5x6=2x的方程怎么解
解方程21x=3.5x6 -
21X=3.5×6 21÷3x=3.5×6÷3 7x=3.5×2 7x=7 x=1
5x—3.5x6=18 解方程5x—3.5x6=18 5x-21=18 5x-21+21=18+21 5x=39 x=39÷5 x=7.8
21X=3.5×6 21÷3x=3.5×6÷3 7x=3.5×2 7x=7 x=1
5x—3.5x6=18 解方程5x—3.5x6=18 5x-21=18 5x-21+21=18+21 5x=39 x=39÷5 x=7.8
解由3.5x6一3x=11.4 两边除以3 得3.5×2-x=3.8 即7-x=3.8 解得x=3.2
3.5×6-X=15.4 X=3.5×6-15.4 X=21-15.4 X=5.6
3.5x6-3ⅹ=9的解? -
3x=21-9解得x=4
x—3.5=31.8÷6 x—3.5=5.3 x=5.3+3.5 x=8.8
X1+X2+X3+X4+X5+X6+X7+X8=20 3X1+3.5X2+4X3+4.5X4+5X5+5.5X6+6X7+6....
才能满足X1+X2+X3+X4+X5+X6+X7+X8=20 ,且3X1+3.5X2+4X3+4.5X4+5X5+5.5X6+6X7+6.5X8=89 ,根据判断3*1(X1)+3*1(X1)+3*1(X1)+4*1(X3)=13,增加的1(X1)+1(X1)+1(X1)+1(X3)=4,因此X1=2+3=5,X2=2,X3=2+1=3,X4=2,X5=2,X6=2,X7=2,X8=2 到此结束了?。
1、解:设有x间房,由题意,得3x+20=5(x-2)解得x=15 人数:3×15+20=65(人)如果你觉得我的回答比较满意,希望你给予采纳,因为解答被采纳是我们孜孜不倦为之付出的动力!
(∝十3.5)X6÷2=30的方程怎么解? -
(x十3.5)X6÷2=30 解:x十3.5)X3=30 x+3.5=30÷3 x+3.5=10 x=10-3.5 x=6.5
4.5×6 + 4x = 41 4x = 14 x = 7/2