若x+2y+32=10,4x+3y+22=15求代数式x+y+2的值
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若x+2y+32=10,4x+3y+22=15求代数式x+y+2的值若x+2y+32=10,4x+3y+22=15求代数式x+y+2的值若x+2y+32=10,4x+3y+22=15求代数式x+y+2
若x+2y+32=10,4x+3y+22=15求代数式x+y+2的值
若x+2y+32=10,4x+3y+22=15求代数式x+y+2的值
若x+2y+32=10,4x+3y+22=15求代数式x+y+2的值
x+2y+32+4x+3y+22=10+15
5(x+y)=-29
x+y+2=2+(-29/5)=-19/5=-3.8
两式相加,除以5得出的得数再加2,即5x+5y=-29,x+y=29/5,所以。。。答案你就知道了
x+2y+32=10.....α 4x+3y+22=15......β
即α+β=5x+5y+54=25
即5x+5y+10= -19
即x+y+2=-19/5=-3.8
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