Can you please have a heart and help a sick person?

Question

I have a fever and can not concentrate can you help me with these?

Name the operation that should be done first in each expression.

1. (9 + 3] x 7

2. 98 - 5 X 7

3. 5 X (9 - 1)

4. (15 * 3) + (4 + 5)

5. 5 * 4 ÷ 2

6. 6. 5(5 - 3) * 2

Evaluate each expression.

7. 2 x 9 + 5 * 3

8. (9 - 4) ÷ 5

9. 10 - 4 + 1

10. 15 - 18 ÷ 9 + 3

11. 30 ÷ (12 - 6) + 4

12. (72 - 12) ÷ 2

13. 2(16 - 9) - (5 + 1)

14. (43 - 23) - 2 * 5

15. 90 - 45 - 24 ÷ 2

16. 81 ÷ (13 - 4)

17. 7 * 8 - 2 * 8

18. 71 + (34 - 34)

At least be kind enough to answer 1

Answer 1

BPEMDAS.

1. (9 + 3) should be done first.

2. 5 x 7 should be done first.

3. (9 - 1) should be done first.

Answer 2

PEMDAS ("Please Excuse My Dear Aunt Sally")="Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction

1. (9 + 3] x 7 = Parentheses (do what is inside the parentheses first--so that would be 9 + 3)

2. 98 - 5 X 7 = Multiply

3. 5 X (9 - 1) = Parentheses (9 - 1)

4. (15 * 3) + (4 + 5) = Parentheses (either...but technically 15 *3)

5. 5 * 4 ÷ 2 = Multiplication

6. 6. 5(5 - 3) * 2 = not sure actually haha...this was a while ago

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PEMDAS

7. 2 x 9 + 5 * 3

5*3=125...2 x 9 + 125...18 + 125 = 143

8. (9 - 4) ÷ 5

5 / 5 = 1

9. 10 - 4 + 1

10 - 5 = 5

10. 15 - 18 ÷ 9 + 3

15 - 2 + 3...15 - 5 = 10

11. 30 ÷ (12 - 6) + 4

30 / 6 + 4...5 + 4 = 9

12. (72 - 12) ÷ 2

60 / 2 = 30

13. 2(16 - 9) - (5 + 1)

2 (7) - (6)...14 - 6 = 8 (I think)

14. (43 - 23) - 2 * 5

(43 - 23) - 32...20 - 32 = -12 (Those asteriks are exponents, right?)

15. 90 - 45 - 24 ÷ 2

90 - 42 - 12 = 36

16. 81 ÷ (13 - 4)

81 / 9 = 9

17. 7 * 8 - 2 * 8

56 - 16 = 40

18. 71 + (34 - 34)

71 + 0 = 71