1.

Take a number ab. Double it and add 18 to the result. Take away 10 and divide it by 2. Take away 4Now, what do you get and why?5.

Answer»

number=abAccording to condition;double it and add 18equation becomes:2ab+18now,take away 10 and divide by 2equation:(2ab+18-10)/2 =(2ab+8)/2 =ab+4

now take away 4equation: ab+4-4 =abso,at the end we are left off with ab because all the other terms got nullified.

Thank you



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