解方程组:3/2Y-5/2X=4/3 1/Y+3/x=4解方程组:3/2Y-5/2X=4/3 1/Y+3/x=4

Question

解方程组:3/2Y-5/2X=4/3 1/Y+3/x=4
解方程组:3/2Y-5/2X=4/3
1/Y+3/x=4

Answer 1

3/2Y-5/2X=4/3
3/y-5/x=8/3
1/y+3/x=4
3/y+9/x=12
两式相减
9/x+5/x=12-8/3
14/x=28/3
x=14x3/28=3/2
1/y+3/(3/2)=4
1/y+2=4
1/y=2
y=1/2
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