x 20 21 22 23
(x-22)+(x-24)+(x-27)+(x-20)=x
(x-22)+(x-24)+(x-27)+(x-20)=x怎么解
x^2+9x+8 x^2-6x+9 x^2-x-12 x^2+10x+21 x^2-20x-125 2x^2+5x+3
2x-7/4x=13 3x+1/3x=20/21 x-0.28x=12.
一道初二数学计算题 3/x(x+2)+3/(x+2)(x+4)+3/(x+4)(x+6)+.+3/(x+20)(x+22
(21)16*3.2-44.6=3x(22)5x-0.5=8(23)(x-4.6)*2.3=9.338(24)3x-1.
35(X-2)+15(5X-6)=(22X-51)+21(3X-4)
35(x-2)-15(5x-6)=(22x-63)-21(3x-4)咋算?
(40-x)/(20+x) = (23+x)/(25-x)怎么解
x+5分之2x=21 x+20%x=9.6 解方程
(12x-10)/21+(7x-9)/20=(2-x)/15+(8x-9)/12
解方程 只要结果,6x-4x=20 1.6+4x=7.6 0.18-6x=0.51 21x-10.8x=8.1 1.6x