沒有 【段考】國一數學下學期 權限,請先開通.
詳解 (共 8 筆)
詳解
-24x+22y
詳解
A:2A+3B-5C = -2x+6y-12x-9y-10x+25y
詳解
2(-x+3y)+3(-4x-3y)-5(2x-5y)
-2x-6y-12x-9y-10x+25y
-24x+10y
詳解
A:2(-x+3y)
B:3(-4x-3y)
C:-5(2x-5y)
-2x+6y-12x-9y-10x+25y
=-24x+21y
詳解
2(-x+3y)+3(-4x-3y)-5(2x-5y)=2
-2x+6y-12x-9y-10x+25y=2
-24x+22y=2
詳解
-34x+22y
詳解
=2(-x+3y)+3(-4x-3y)-5(2x-5y)
=-2x+6y-12x-9y-10x+25y
=-24x+22y
詳解
=2(-x+3y)+3(-4x-3y)-5(2x-5y)
=-2x+6y-12x-9y-10x+25y
=-20x+22y