Solution of quadratic equation with three variables X square / 2000 square + Z square / 1000 square = 1 X square / 1200 square + y square / 600 square = 1 Think about it

Solution of quadratic equation with three variables X square / 2000 square + Z square / 1000 square = 1 X square / 1200 square + y square / 600 square = 1 Think about it

Sorry, this indefinite equation can't be solved. There are many answers. For example, when x takes 1,2,3,4 and so on, they all have corresponding values of Y and Z, so they can't be solved. There's really no way

Ternary equation solution, urgent, online, etc
xy+0.03y=360
xz-0.02z=360
xy+xz=720

They are denoted by (1), (2) and (3),
① 03y = 0.02z, that is, 3Y = 2Z. ④
From ④ and ③ to xy = 288
From 1, → y = 2400;
Next, z = 3600;
x=0.12

Cubic equation with three variables
x-2y=-9 3x-y+z=4
{ y-z=3 { 2x+3y-z=12
2z+x=47 x+y+z=6

X-2y = - 9... (1) Y-Z = 3. (2) 2Z + x = 47. (3) (1) + (2) * 2 get: x-2z = - 3. (4) (3) + (4) get: x = 22; substitute (4) get: z = 25 / 2; then get: y = 31 / 2; so the first question: x = 45, y = 31 / 2, z = 25 / 2.3x-y + Z = 4.. (1) 2x + 3y-z = 12... (2) x + y + Z = 6. (3) (1) - (3) can