解方程组:3X+2Y=8,7X+4Y=15
解方程组:3X+2Y=8,7X+4Y=15
解方程组24/(x+y) +24/(x-y) = 7/3 ,8/(x+y) +18/(x-y) = 4/3
解方程组 10(x-y)=3(x+y)+15 6(x+y)=4(2x-y)+16
解方程组 x-y/3-x+y/4=2 x-y/6-x+y/8=3
解方程组lg(x-y)+lg(7x-8y)=2,2^(-x+3y)=4
解方程组(x/2-y/5=4①,x/7-y/15=3②)
解方程组;x/2-y/5=4;x/7-y/15=3
解二元一次方程组x/4+y/3=7,x/3+y/2=8
3X+4Y=2 7X+8Y=6 解方程组
3x+5y=8,4x+2y=-7解方程组
解方程组(x+y)(x-2y)=-5 (x-y)(x+2y)=7
解方程组:{x+|3x-y|+3y=15 2x+y=6