3x2 ^2/6x1x2=20/30 (1)
x2 /2x1=2/3
x2=4/3x1
20x1+30x2=540 (2)
20x1+30 *4/3x1=540
20x1+40x1=540
60x=540
x1=9
x2=4/3*9=12
这个方程解的具体步骤.
3x2 ^2/6x1x2=20/30 (1)
x2 /2x1=2/3
x2=4/3x1
20x1+30x2=540 (2)
20x1+30 *4/3x1=540
20x1+40x1=540
60x=540
x1=9
x2=4/3*9=12