thuyquynhtrinhthin0m thuyquynhtrinhthin0m

18-09-2021
Mathematics

contestada

tìm x,y,z
a,5x=7y và x-y=14
b,4x=5y=2z và x+2y-z=39
c,x/5=y/7;y/14=z/3 và x+y+z=54
d,x/y=7/20;y/z=5/8 và x-y+z=-15
e,x/3=y/4=z/5 và xyz=480

Respuesta :

ditherbenavides ditherbenavides

18-09-2021

Answer:

subu muna titi ko

Step-by-step explanation:

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