Question

If you answer this question correctly I will answer 1 of your questions

Evaluate the expression 10−5a+(18−b), where a=2 and b=11.


Which THREE expressions will have the same value?


28÷(a×2)


20+b−(4×a)


49−43+(a÷a)


30−25+(b−9)


50÷a−(b+20)

Answer 1

We can start by solving for 10-5a+(18-b). By plugging in a and b, we get

10 - 10 + (18 - 11)= 7

28 ÷ (a × 2) = 28/4 = 7

20 + b − (4 × a) = 31 - 8 = 23

49 − 43 + (a ÷ a) = 49 - 43 + 1 = 7

30 − 25 + (b − 9) = 5 + 2 = 7

50 ÷ a − (b + 20) = 25 - 31 = -6

So, 28 ÷ (a × 2), 49 − 43 + (a ÷ a), and 30 − 25 + (b − 9) will all have the same answer as 10−5a+(18−b)