1.(x/2+20)/(x/3)=(x/2-20)/(x/4)
2个回答
(x/2+20)/(x/3)=(x/2-20)/(x/4)
方程两边同时乘以12x得
4(x/2+20)=3(x/2-20)
4(x+40)=3(x-40)
4x+160=3x-120
x=-280
相关问题
1.下列单项式:-x,2x^2,-3x^3,4x^4,…,-19x^19,20x^20,…
x1+x2+x3+x4=20 1
1x2+2x3+3x4+.+19x20
解下列方程:(1)3x-7+6x=4x-8;(2)4x-3(20-x)=5x-7(20-x);(3)[2x−1/3−2x
1.2(20-X)+20大于等于3(3X-4)=25X (1)
(2X2)/1X3+(4X4)/(3X5)+(6X6)/(5X7)+...+(20X20)/(19X21)==?
解下列方程:(1)3x-7+6x=4x-8;(2)4x-3(20-x)=5x-7(20-x);(3) 2x-1 3 -
(1)(x+2)(x+3)=20 (2) 根号x²-4x=4根号2
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
x-(4x-2)/6=(1-2x)/3追加20