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schepotkina [342]
2 years ago
9

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

Mathematics
1 answer:
bogdanovich [222]2 years ago
7 0

Step-by-step 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 = <u>2</u>

B × (-C) - (-D) + A

3 × (-9) - (-15) + 2 = -27 + 15 + 2 = -12 + 2 = <u>-10</u>

(C + D) : B + A

(9 + 15) : 3 + 2 = 24 : 3 + 2 = 8 + 2 = <u>10</u>

D : B + A - C

15 : 3 + 2 - 9 = 5 + 2 - 9 = 7 - 9 = <u>-2</u>

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