can anyone solve for y in this equation?

2009-04-02 3:03 pm
85=Y-145+0.5(Y+40+0.25Y)

回答 (6)

2009-04-02 3:15 pm
✔ 最佳答案
85 = Y - 145 + 0.5 (Y + 40 + 0.25Y)

85 = Y - 145 + 0.5Y + 20 + 0.125Y

85 + 145 - 20 = Y + 0.5Y + 0.125Y

210 = Y (1 + 0.5 + 0.125)

210 = Y (1.625)

210 / 1.625 = Y

Y = 129.23
2009-04-02 3:08 pm
85=Y-145+0.5(Y+40+0.25Y)
y - 145 + 0.5y + 20 + 0.125y = 85
1.625y - 125 = 85
1.625y = 210
y = 129.230769
2009-04-02 3:20 pm
85=Y-145+.5(Y+40+.25Y)
85=Y+(-)145+.5Y+20+.125Y
85=1.625Y+(-)145+20
85=1.625Y+(-)125
-40=1.625Y
-24.615384615=Y


Y=-24.615384615

You can simplify the answer if you want
參考: My Mind
2009-04-02 3:18 pm
85=Y-145+0.5(Y+40+0.25Y)
85=Y-145+0.5Y+20+0.125Y
85=1.625Y-125
85+125=1.625Y
210=1.625Y
Y=129.2307692 answer//
2009-04-02 3:17 pm
85=Y-145+0.5(Y+40+0.25Y)
85=Y-145+0.5(1.25Y+40)
85=Y-145+0.625Y+20
85=1.625Y-125
Y=(85+125)/1.625
Y=210/1.625
Y=1680/13
Y=129.23
2009-04-02 3:12 pm
85 = y - 145 + 0.5(y + 40 + 0.25y)

85 = y - 145 + 0.5y + 20 + 0.125y

85 = (1.625)y - 125

1.625y = 85 + 125 = 210

y = 210/1.625

y = 129.23


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