求生之路2注册表在哪:一个方程组……要过程…………

来源:百度文库 编辑:高考问答 时间:2024/05/03 16:19:57
(X+4)/5 - (2Y-3)/3 = 2
(X+3)/3 + (Y+5)/2 = 3

记住!要过程……

3(X+4)-5(2Y-3)=30
2(X+3)+3(Y+5)=18

3X+12-10Y+15=30
2X+6+3Y+15=18

3X-10Y=3
2X+3Y=-3

y=-15/29
x=-21/29

3(X+4)-5(2Y-3)=30
2(X+3)+3(Y+5)=18

3X+12-10Y+15=30
2X+6+3Y+15=18

3X-10Y=3
2X+3Y=-3

Y=-11/15
X=-3/5

3(X+4)-5(2Y-3)=30
2(X+3)+3(Y+5)=18

3X+12-10Y+15=30
2X+6+3Y+15=18

3X-10Y=3
2X+3Y=-3

Y=-11/15
X=-3/5

3(x+4)/15-5(2y-3)/15=30/15
所以,3(x+4)-5(2y-3)=30
下同

3(X+4)-5(2Y-3)=30
2(X+3)+3(Y+5)=18

3X+12-10Y+15=30
2X+6+3Y+15=18

3X-10Y=3
2X+3Y=-3

Y=15/29
X=-21/29