问题描述:
2x+2y=6,3x+4y=16
0.5x+0.8y=4.7,0.6x+1.2y=6.6
7(5x+4y/5=4,(4x+7y)=8.4
x/3+y/4=1/2 ,7x+4y=-15
3IXI+2Y=9,4IXI-5Y=35 “I”表示绝对值
0.5x+0.8y=4.7,0.6x+1.2y=6.6
7(5x+4y/5=4,(4x+7y)=8.4
x/3+y/4=1/2 ,7x+4y=-15
3IXI+2Y=9,4IXI-5Y=35 “I”表示绝对值
问题解答:
我来补答展开全文阅读