Math help?

👨🏻‍🏫 學術台 數學
2020-04-13 4:09 pm
Steps to solve the following:
5 + 1 x (-8)
更新1:

But why's the -8 in a parenthesis? 

更新2:

What about -3 - 5 - 9 x (-2)?

回答 (3)

2020-04-13 4:10 pm
✔ 最佳答案
Follow PEMDAS rule. 

1 × (-8) = -8

5 + -8 = -3

Answer: -3
👍 1 👎 0
2020-04-13 4:17 pm
It is a common practice to put negative number in brackets to avoid confusion.

5 + 1 × (-8)
= 5 + (-8) …… for 1 × (-8) = -8
= 5 - 8 …… for + (-8) = - 8
= -3
👍 4 👎 0
2020-04-13 7:59 pm
5 + 1 x (-8)
=5 - 8
=- 3 answer//

 -3 - 5 - 9 x (-2)
=- 3 - 5 + 18
=10 answer//
👍 0 👎 0


收錄日期: 2021-04-18 18:28:00
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