来自刘怡光的问题
解方程组:(1)23x+34y−15=056x=52y+2(2)x−3y4+y+53=2x−710(x−y)−4(1−x)=3y.
解方程组:
(1)
23x+34y−15=056x=52y+2
(2)
x−3y4+y+53=2x−710(x−y)−4(1−x)=3y.
1回答
2020-03-06 17:33
解方程组:(1)23x+34y−15=056x=52y+2(2)x−3y4+y+53=2x−710(x−y)−4(1−x)=3y.
解方程组:
(1)
23x+34y−15=056x=52y+2
(2)
x−3y4+y+53=2x−710(x−y)−4(1−x)=3y.
(1)40x+45y=12①5x−15y=12②,①+3×②可得:55x=48,解得:x=4855,将x=4855代入②可得:y=-84165,故方程组的解为x=4855y=−84165.(2)整理得:21x+5y=104 ①14x−13y=4 ②,①×2-②×3得:...