simultaneous equations_0
2017/06/29 00:44
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發問:
1) x/3 + y/2 = 4.....(1) x/2 - y/3 = 5/3.....(2) (1)x_____, _________.....(3) (2)x_____, _________.....(4) 2) The sum of x and y is 43 and their difference is 15. a) If x is larger than y, then the simultaneous equations in x and y are _____.....(1) _____.....(2) b) Find the values of x and y.
最佳解答:
1) x/3 + y/2 = 4.....(1) x/2 - y/3 = 5/3.....(2) (1)*6 : 2x + 3y = 24 ..... (3) (2)*6 : 3x - 2y = 10 ..... (4) (3)*2 + (4)*3 : 13x = 78 x = 6 (3)*3 - (4)*2 : 13y = 52 y = 4 2) The sum of x and y is 43and their difference is 15. a) If x is larger than y, then the simultaneous equations in x and y are x + y = 43 ..... (1) x - y = 11 ..... (2) b) Find the values of x andy. (1) + (2) : 2x = 54 x = 27 (1) - (2) : 2y = 32 y = 16
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simultaneous equations發問:
1) x/3 + y/2 = 4.....(1) x/2 - y/3 = 5/3.....(2) (1)x_____, _________.....(3) (2)x_____, _________.....(4) 2) The sum of x and y is 43 and their difference is 15. a) If x is larger than y, then the simultaneous equations in x and y are _____.....(1) _____.....(2) b) Find the values of x and y.
最佳解答:
1) x/3 + y/2 = 4.....(1) x/2 - y/3 = 5/3.....(2) (1)*6 : 2x + 3y = 24 ..... (3) (2)*6 : 3x - 2y = 10 ..... (4) (3)*2 + (4)*3 : 13x = 78 x = 6 (3)*3 - (4)*2 : 13y = 52 y = 4 2) The sum of x and y is 43and their difference is 15. a) If x is larger than y, then the simultaneous equations in x and y are x + y = 43 ..... (1) x - y = 11 ..... (2) b) Find the values of x andy. (1) + (2) : 2x = 54 x = 27 (1) - (2) : 2y = 32 y = 16
其他解答:
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