tashanicole
07.01.2021 •
Mathematics
-5(n-1)=7(n+3)
Solve for the missing variable please help!
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Ответ:
n = -
Step-by-step explanation:
Given
- 5(n - 1) = 7(n + 3) ← distribute parenthesis on both sides
- 5n + 5 = 7n + 21 ( subtract 7n from both sides )
- 12n + 5 = 21 ( subtract 5 from both sides )
- 12n = 16 ( divide both sides by - 12 )
n = = -
Ответ:
Step-by-step explanation:
To solve this you have to use the distributive property.
So first you would distribute the -5 to n and -1.
So the new equation will be -5n + 1 = 7 (n + 3)
Next, distribute the 7 to n and 3.
The new equation will be -5n + 1 = 7n + 21
Next you simplify by adding 5n to both sides which will give you 1 = 12n + 21
Then you subtract 21 from both sides and get -20 = 12n
So then you divide both sides by 12 to get n by itself and you are left with -5/3 = n
Ответ:
2 rational real roots.