Hi there!
Here is what the rules says
+ * + = + (Plus times plus = plus)
+*- = - (Plus times minus = minus)
- * - = + (Minus times minus = Plus
- * + = - (minus times plus = minus)
You need to know the rules by heart because you will use it a lot.
So let see how it works with the problem
6 -(-7)
What does the rules say? It says
- * - = plus
So, we gonna use PLUS for the sign
6-(-7) = 6 + 7 = 13
13 is the correct answer.
I hope I helped. Please let me know if you have more questions.
<span>Every integer is a rational number, since each integer n can be written in the form n/1. For example 5 = 5/1 and thus 5 is a rational number. i hope this helps you</span>
The answer is A. -3 and its a negative result cause that's how it is, like for ex, -15/3 = -5 or 15/-3 = -5 is a negative, and w<span>hen two positive numbers are divided, the answer is a positive number 15/3 = 5.</span>
Answer:
(s+t)-u
Step-by-step explanation:
You have to add s and t.
Since they are variables, the sum will be s+t
you then have to subtract u from s and t so, you have (s+t)-u
Ok
1/9=1present
3hours=xpresent
1/9 times x=3
multiplyboth sides by 9
x=27
answer is 27
another way is
1/9 hour=1 present
1hour=9present
3 hour=27 present
