11x+9y=69 7x+3y=33 请帮我算一下x和y各是多少

11x+9y=69 7x+3y=33 请帮我算一下x和y各是多少 3(x+y)-2(x-y)=11 4(x+y)+3(x-y)=9 4(x-y)-3(x-y)=9 5(x-y)+2(x-y)=11 请解答方程组：（39）2x+y=5 (40)x+y=7 (41)2x+3y=12 (42)2x+y=3ax+3y=7 2x-y=8 3x+4y=17 3x-5y=11(43)3x+y=82 (44)3(x-1)=y+5 45 x/4+y/3=7 (46)x+y/3 +x-y/2=610x-11y=87 5(y-1)=3(x+5) 2/3x+y/2=14 3(x+y-)2(x-y)=28 5x-(1-11y)/8=5y-6x+2/9=3x+4y+7/6如题,财富值不够,请见谅 3x+2=y 5x+4=y 7x+6=y 9x+8=y 11x=y 联立方程 有的话 3x+2=y 5x+4=y 7x+6=y 9x+8=y 11x=y 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怎么解 y-3x=2,y-5x=4,y-7x=6,y-9x=8,y-11x=0方程组,无 根据3（x+y)-2(x-y)=11,4(x+y)+3(x-y)=9可得出x+y= ,x-y= x-y/x+y=-1/2,x*x-xy-2y*y/x*x-3xy+2y*y的解是多少?同上,请将过程写出, 4x=9y,求x+y/y;y-x/2x请给我完整过程 {x+y=5{3x-7y=11 3(x+y)-4(x-y)=11,2(x-y)+5(x+y)=27 6(x+y)的平方-11(x+y)(x-y)+3(x-y)的平方=? Y=x+3 7x+5y=9 y-x=3 7x+5y=-9