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1.若x比2=y比3=z比5,则x+y+z比x=2.已知线段a,b,c,且x比2=y比3=z比4,(1)求y+z比z的值(2)若线段X,Y,Z满足x+y+z=54,求x,y,z的值
题目详情
1.若x比2=y比3=z比5,则x+y+z比x=
2.已知线段a,b,c,且x比2=y比3=z比4,(1)求y+z比z的值 (2)若线段X,Y,Z满足x+y+z=54,求x,y,z的值
2.已知线段a,b,c,且x比2=y比3=z比4,(1)求y+z比z的值 (2)若线段X,Y,Z满足x+y+z=54,求x,y,z的值
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答案和解析
设x/2=y/3=z/5=t
则x=2t,y=3t,z=5t
x+y+z比x= 10t/2t=5
x/2=y/3=z/4=t
y+z比z=7t/4t=7/4
x+y+z=9t=54
t=6
x=2t=12
y=3t=18
z=4t=24
则x=2t,y=3t,z=5t
x+y+z比x= 10t/2t=5
x/2=y/3=z/4=t
y+z比z=7t/4t=7/4
x+y+z=9t=54
t=6
x=2t=12
y=3t=18
z=4t=24
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