Question

訪客45

接下來要怎麼算？

X
(x-2) +51 31+1 2+2
y-3=0
x-2=0
X=2
y=3
類題2. 已知-3<x<2,且-6<y<3,化簡、(x+y-6)-(x-y+8) + 4x +28x+49 =?
「答]5 5
= (x+7-6) - 1 x - 7+81 + 12x+7
x+y-6-x+7-8 + 2x
2X42
o
箱3
IT 3
erillx-21= 4 Ux=