解方程组:3(x-5)=3y-6 x-y/3-x+2y/6=2解方程组:3(x-5)=3y-6 x-y/3-x+2y/6=2
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解方程组:3(x-5)=3y-6 x-y/3-x+2y/6=2解方程组:3(x-5)=3y-6 x-y/3-x+2y/6=2
解方程组:3(x-5)=3y-6 x-y/3-x+2y/6=2
解方程组:3(x-5)=3y-6 x-y/3-x+2y/6=2
解方程组:3(x-5)=3y-6 x-y/3-x+2y/6=2解方程组:3(x-5)=3y-6 x-y/3-x+2y/6=2
由①得,3x-15=3y-6,即:x-y=3……③
由②得,2(x-y)-(x+2y)=12,即:x-4y=12……②
③-②得,3y=-9,y=-3
把y=-3代入③得,x+3=3,∴x=0
∴{x=0 y=-3
由原式 3x-15=3y-6 所以x-y=3 你后面能用括号将它们分清楚呢
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