Question

please answer all questions in given photo.. please answer correctly and sincerely​

Answer 1

Step-by-step explanation:

here is your answer of your question hope it will help you

Answer 2

$8.(i) \: a = 21 \: and \: b = 18 \\ = > a - ( - b) = a + b \\ = > 21 - ( - 18) = 21 + 18 \\ = > 21 + 18 = 21 + 18 \\ = > 39 = 39 \\ = > lhs = rhs \\ hence \: verified$

$(ii) \: a = 118 \: and \: b = 125 \\ = > 118 - ( - 125) = 118 + 125 \\ = > 118 + 125 = 243 \\ = > 243 = 243 \\ = > lhs = rhs \\ hence \: verfied$

$(iii) \: a = 75 \: and \: b \: = 84 \\ = > 75 - ( - 84) = 75 + 85 \\ = > 75 + 85 = 160 \\ = > 160 = 160 \\ = > lhs = rhs \\ hence \: verified$

$(iv) \: a = 28 \: and \: b = 11 \\ = > 28 - ( - 11) = 28 + 11 \\ = > 28 + 11 = 39 \\ = > 39 = 39 \\ = > lhs = rhs \\ hence \: verified$

Hope it helps :)