Mathematical environmental protection clothing making

(1) Settings? Electric x? Wash y? Empty z

5000x+2000y+2400z= 129000

500 x+ 160y+300 z = 12900

x+y+z=40？ Solve ternary linear equation

X = 15, Y = 15 and Z = 10 are obtained.

(2) I don't know if your second question is wrong. There are many answers, 1 TV, 1 washing machine, 2 air conditioning, and many schemes. 1, 1, 1,。 1,1,2 ...1,1,3 ... 2, 2,1... etc.

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