Instructions
What should come in place of the question mark (?) in the following questions?
Solution
Expression : $$|?-45|=40$$
=> $$x - 45 = \pm 40$$
Case 1 : $$x - 45 = 40$$
=> $$x = 40 + 45 = 85$$
Case 2 : $$x - 45 = -40$$
=> $$x = 45 - 40 = 5$$
$$\therefore x = 85 , 5$$
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