(3/5x-20)*4/5=2/5x
1个回答
两边同时乘以5/4:
3/5x-20=1/2x
(3/5-1/2)x=20
1/10x=20
x=200
相关问题
5x(x-4)-2.5=20(x-3)
观察下列单项式:1/2x,-2/3x^2,3/4x^3,-4/5x^4,5/6x^5,…,19/20x^19,-20/2
解方程.[4/5]x-[2/3]x=24[x/5]=20%[1/5]:0.5=3:x.
1 X5=5 2X4=8 3X?=13 4X5=20 5X1=5 问号是什么?
(4)1/6(3x-6)=2/5x-3 (5)3(x-7)+5(x-4)=15 (6)4x-3(20-x)=-4
(2X2)/1X3+(4X4)/(3X5)+(6X6)/(5X7)+...+(20X20)/(19X21)==?
5(x-5.5)=20.5 2.4(6.4+x)=19.2. 25(x+
6/1(3x-6)=5/2x-3 3(x-7)+5(x-4)=15 4x-3(20-x)=-4 2/y-1=2-5/y+
3x4+4x5+5x6+.19x20+20x21=?