解方程组：x+y/2+x-y/3=6 4(x+y)-5(x-y)=12
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解方程组：x+y/2+x-y/3=64(x+y)-5(x-y)=12解方程组：x+y/2+x-y/3=64(x+y)-5(x-y)=12解方程组：x+y/2+x-y/3=64(x+y)-5(x-y)=
解方程组：x+y/2+x-y/3=6 4(x+y)-5(x-y)=12
解方程组：x+y/2+x-y/3=6 4(x+y)-5(x-y)=12
解方程组：x+y/2+x-y/3=6 4(x+y)-5(x-y)=12
设a=x+y,b=x-y
原方程组为：
a/2+b/3=6,即3a+2b=36,即：12a+8b=144
4a-5b=12,即：12a-15b=36
相减得：23b=108,得：b=108/23,再得：a=12-2b/3=204/23
因此有：
x=(a+b)/2=156/23
y=(a-b)/2=48/23
解方程组,x+y/2=3x-2y=10+6x+y/4,
解方程组2(x-y)/3-x+y/4=-1 6(x-y)-4(2x-y)=16
解方程组：2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16
解方程组;x+y/2=x-y/3=6 4(x+y)-3(x-y)=-20
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3(x+y)—4(x-y)=4,(x+y/2)+(x-y/6)=1.解方程组
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解方程组：x+y/2+x-y/3=6 4(x+y)-5(x-y)=12
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