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標題:

H + K = 999 , K - H = 555 , 那麼 H = ( ? )

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最佳解答:

H + K = 999......(1) K - H = 555 K = H + 555......(2) Sub (2) into (1) H + H + 555 = 999 2H = 444 H = 222

其他解答:

H=222|||||聯立分程: {H+K=999.........(1) {K-H=555..........(2) (1).....K+H=999 (2).....K-H=555 (1)+(2)2K=1554 K=777 把K=777代入方程(1), 777+H=999 H=222|||||H=222|||||H + K = 999 soH=999- K K - H = 555 K -(999- K)= 555 K -999+ K= 555 2K= 555+999 2K=1554 K=1554/2 K=777 那麼H= 999 -K =999-777 =222|||||222!!!!!!!!!!!!!|||||h+k=999 k-h=555 k=777 h=222|||||H + K = 999---------(1) K - H = 555 -H +K = 555------(2) (1)-(2) 2H =444 H =222-----(3) Sub into (1), 222 + K = 999 K = 777|||||222!!!!!!!!!!!!!|||||999>H>555 H H H=222 K=777|||||H=2229B623C59CC17F40C
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