Question

Let A = 2, B = 3, C = 9, and D = 15.

Find the value of each expression listed below. -2 -14 10 2 -6 -10 14 6
-A + C - (D ÷ B)----------------------> (answer)
B × (-C) - (-D) + A----------------------> (answer)
(C + D) ÷ B + A----------------------> (answer)
D ÷ B + A - C----------------------> (answer)

Answer 1

Explanation:

Put A = 2, B = 3, C = 9 and D = 15 to the given expressions.

Use PEMDAS.

-A + C - (D : B)

-2 + 9 - (15 : 3) = -2 + 9 - 5 = 7 - 5 = 2

B × (-C) - (-D) + A

3 × (-9) - (-15) + 2 = -27 + 15 + 2 = -12 + 2 = -10

(C + D) : B + A

(9 + 15) : 3 + 2 = 24 : 3 + 2 = 8 + 2 = 10

D : B + A - C

15 : 3 + 2 - 9 = 5 + 2 - 9 = 7 - 9 = -2