解方程组①4x-3y=11,2x+y=13②m/3-3=n+3/6,2n-m/4=3
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解方程组①4x-3y=11,2x+y=13②m/3-3=n+3/6,2n-m/4=3解方程组①4x-3y=11,2x+y=13②m/3-3=n+3/6,2n-m/4=3解方程组①4x-3y=11,2x
解方程组①4x-3y=11,2x+y=13②m/3-3=n+3/6,2n-m/4=3
解方程组①4x-3y=11,2x+y=13②m/3-3=n+3/6,2n-m/4=3
解方程组①4x-3y=11,2x+y=13②m/3-3=n+3/6,2n-m/4=3
4x-3y=11①
2x+y=1②
②*2得4x+2y=2③
①-③得
-5y=9
y=-9/5
代入②得
2x-9/5=1
x=7/5
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