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大括号x+y/2+x-y/3=11/6 4(x+y)-5(x-y)=7 快

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大括号x+y/2+x-y/3=11/6 4(x+y)-5(x-y)=7 快
大括号x+y/2+x-y/3=11/6 4(x+y)-5(x-y)=7 快
(x+y)/2+(x-y)/3=11/6,4(x+y)-5(x-y)=7
令x+y=a,x-y=b
{a/2+b/3=11/6
{4a-5b=7
整理得：
{3a+2b=11
{4a-5b=7
解得：a=3,b=1
{x+y=3
{x-y=1
解得：x=2,y=1
解方程组 {3(x+y)-4(x-y)=11 {2(x-y)+5(x+y)=27全过程、快 3(x+y)-4(x-y)=11,2(x-y)+5(x+y)=27 3x+2=y 5X+4=Y 7X+6=Y 9X+8=y 11x=y要如何计算 3x+2=y 5x+4=y 7x+6=y 9x+8=y 11x=y y-3x=2,y-5x=4,y-7x=6,y-9x=8,y-11x=0方程组, 3x+2=y 5x+4=y 7x+6=y 9x+8=y 11x=y 联立方程 有的话 {3x-2y=3,2x+2y=17 {4x-2y=14,5x+y=7 {x+3y=6,2x-3y=3 {2x+3y=11 {3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1 x+y/2+x-y/3=6,4(x+y)-3(x-y)=-20 {(x+y)/2+(x-y)/3=6 4(x+y)-3(x-y)=-20 4(x+y)-3(x-y)=-20,2/x+y+3/x-y=6 6(x-y)-2(x+y)=14 3(x-y)+(x+y)=5