Answer:
The rule for multiplying and dividing rational numbers
Ok so if both numbers are negative or positive the answer will be positive. but if one number is positive and the other is negative the answer is negative.
Hope this helps
Brainliest please
Answer: b
Step-by-step explanation:
In the last question, you wrote on a second equation "13x ...." kkk
Let's go:
We have to check each one answer in the following system:
x - 2y = 7
3x + 7y = 8
I can use the substituition method to solve this system...
x = 7 + 2y
3x + 7y = 8
3(7 + 2y) + 7y = 8
21 + 6y + 7y = 8
13y = 8 - 21
13y = -13
y = -1
x = 7 + 2.(-1)
x = 5
Finally, the correct answer is the second one (letter b).
Ex: you can do 5-3 by putting a dot on the five and looping back 3 spaces. Hope it helps!
