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X+Y+Z=3460,(X-380):(Y+720):(Z+1/3*Z)=5:3:2要解方程的详细过程。!!!!!!!...
X+Y+Z=3460,
(X-380):(Y+720):(Z+1/3*Z)=5:3:2
要解方程的详细过程。!!!!!!! 展开
(X-380):(Y+720):(Z+1/3*Z)=5:3:2
要解方程的详细过程。!!!!!!! 展开
1个回答
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(x-380):(y+720):(z+z/3)=5:3:2
(x-380):(y+720):z=10:6:3
x + y + z = 3460
(x-380) + (y+720) + z = 3800
x-380 = 3800×10÷(10 + 6 + 3) = 2000 , x = 2380
y+720 = 3800×6÷(10 + 6 + 3) = 1200 , y = 480
z = 3800×3÷(10 + 6 + 3) = 600
x = 2380 , y = 480 , z = 600
(x-380):(y+720):z=10:6:3
x + y + z = 3460
(x-380) + (y+720) + z = 3800
x-380 = 3800×10÷(10 + 6 + 3) = 2000 , x = 2380
y+720 = 3800×6÷(10 + 6 + 3) = 1200 , y = 480
z = 3800×3÷(10 + 6 + 3) = 600
x = 2380 , y = 480 , z = 600
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