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標題:
請幫助解答一些數學問題
發問:
請列式 over=除 solve the following equation (A) y+5 over 2 減 y over 7 =0 s+7 over 2 減 3sover 8 =11 3x+4 over 5 = 2x+7 over 3 3t- t-6 over 12 =18 1 over 12 + 1 over v=4
最佳解答:
(y+5)/2 - y/7 = 0 14[(y+5)/2 - y/7] = 0 7(y+5) - 2y = 0 7y + 35 - 2y = 0 5y = -35 y = -7 (s+7)/2 - 3s/8 = 11 8[(s+7)/2 - 3s/8] = 88 4(s+7) - 3s = 88 4s + 28 - 3s = 88 s = 60 (3x+4)/5 = (2x+7)/3 15[(3x+4)/5] = 15[(2x+7)/3] 3(3x+4) = 5(2x+7) 9x + 12 = 10x + 35 x = -23 (3t - t-6)/12 = 18 2t - 6 = 216 2t = 222 t = 111 1/12 + 1/v = 4 12v[1/12+1/v] = 12v * 4 v + 12 = 48v 47v = 12 v = 12/47
其他解答:6A560DB68EC65D60
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