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1. Tìm x, y ∈ Z biết : a) xy – 3x = -19 ; b) 3x + 4y – xy = 16. MONG CÁC BN GIẢI HỘ MK. THX U!!!
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Read the text below and look carefully at each line. Some of the lines are correct, and some have a word which should not be there. If a line is correct, put a tick () by the number on the separate answer column. There are two examples at the beginning (0 and 00). (1 pt.) 1.British people living outside the UK have to become accustomed 2 to the image of Britain that appears to exist all round 3 the world. They have to accept that a lot of people will to make out 4 jokes about British food, for instance, and our venerable 5tradition of having cups of tea first a thing in the morning. In 6 actual fact, many Brits abroad put up with the jokes, but what 7they find really that hard to accept is the difficulty of getting 8 a decent cup of tea anywhere. After at all, surely it’s not so 9 hard to make a cup of tea! Why do the Brits complain about the tea 10 been served abroad? For a start, “tea” outside Britain can mean all 11sorts of fruit teas as well as the basic black tea, which is what 12 is meant when people have use the word in Britain. When you 13 make fruit teas, you don’t necessarily have to use the boiling water. 14 This is why ‘tea’ in a restaurant or café abroad generally means 15 a cup of warm water brought with a teabag on a piece of 16 string. Naturally, this tastes nothing even remotely like real tea, which explains don't like that tea much.

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