Question

2.Using suitable rearrangement and find the sum: (a)4/7 + (-4/9) +3/7 + (-13/9) (b) −5 + 7/10 + 3/7 -3 + 5/14 - 4/5 3. Verify – (– x) = x for (i) x = 3⁄5 (ii)x = -(7/9) (iii)x = 13/-15 4. Give one example each to show that the rational numbers are closed under addition, subtraction and multiplication. Are rational numbers closed under division? Give two examples in support of your answer. 5. Verify the property x + y = y + x of rational numbers by taking (a)x=1⁄2,y=1/2 (b)x=-2⁄3,y=-5/6 (c)x=-3/7,y=20/21 (d)x=-2⁄5,y=-9/10 please answer all the question and i will make you Brainliest

Answer 1

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