To solve this problem, the first thing we have to do is regroup the terms so that we can then subtract, simplify, subtract, and finally simplify again.
But first we must know.
<h3>¿What are the equations?</h3>
Equations are those mathematical equalities divided between two expressions which are called members and separated by their equal sign, in which known elements and unknown or unknown data appear, related by mathematical operations.
<h3>We solve the problem:</h3>
- 8n - 7 = -12 + 3n
- 8n - 7 = 3n - 12
- 8n - 7 - 3n = -12
- 5n - 7 = -12
- 5n = -12 + 7
- 5n = -5
- N = -1
Now we must check our results.
8n -7 = -12 + 3n
8 × - 1 - 7 = -12 + 3 × - 1
- 8 - 7 = - 12 - 3
- 15 = - 12 - 3
- 15 = - 15
So, our results are correct, the answer is n = - 1
¡Hope this helped!
1( n * 2)
2(n+2*x)
i hope this helps the question wasn't very specific
Answer:
the first one: 0.28x=13.44
Step-by-step explanation:
Answer:
i think the answer would be 21 dollars for 5.75 x 3.6.
5.00 x 3.6 equals to 17.96
all together about 38.96 or 40
Step-by-step explanation:
The smallest county is 129 square miles large.
Step-by-step explanation:
Let,
Smallest county = x
Largest county = y
According to given statement;
The largest county in the state of Texas is 6064 square miles larger than the smallest county in the same state.
y = x+6064 Eqn 1
The size of the largest county is 48 times the size of the smallest county plus one square mile.
y = 48x+1 Eqn 2
As Eqn 1 and Eqn 2 are both equal to y, therefore,
Eqn 1 = Eqn 2
![x+6064=48x+1\\6064-1=48x-x\\6063=47x\\47x=6063](https://tex.z-dn.net/?f=x%2B6064%3D48x%2B1%5C%5C6064-1%3D48x-x%5C%5C6063%3D47x%5C%5C47x%3D6063)
Dividing both sides by 47
![\frac{47x}{47}=\frac{6063}{47}\\x=129\ square \ miles](https://tex.z-dn.net/?f=%5Cfrac%7B47x%7D%7B47%7D%3D%5Cfrac%7B6063%7D%7B47%7D%5C%5Cx%3D129%5C%20square%20%5C%20miles)
The smallest county is 129 square miles large.
Keywords: linear equation, substitution method
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