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svp [43]
3 years ago
14

3n-3+10+2n=10 help plz show work

Mathematics
2 answers:
Kryger [21]3 years ago
8 0

Answer:

n=3/5

Step-by-step explanation:

3n-3+10+2n=10  Combine like terms.

5n+7=10              Subtract 7 from both sides.

    <u>-7  -7</u>

5n=3                    Divide both sides by 5.

<u>/5  /5</u>

n=3/5

Hope this helps and have an amazing day ^^

NikAS [45]3 years ago
4 0

Answer:

n=3/5

Step-by-step explanation:

3n−3+10+2n=10

Step 1: Simplify both sides of the equation.

3n−3+10+2n=10

3n+−3+10+2n=10

(3n+2n)+(−3+10)=10(Combine Like Terms)

5n+7=10

5n+7=10

Step 2: Subtract 7 from both sides.

5n+7−7=10−7

5n=3

Step 3: Divide both sides by 5.

5n /5

= 3 /5

n= 3 /5

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Answer:

L = 30\\R = 21\\M = 42

Step-by-step explanation:

Let's assign each person a variable using the first letter of his/her name.

Then we get the following equations based on the information given:

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Then we can use substitution:

L + M + R = 93\\L + (2R) + R = 93\\L + 3R = 93

Rearrange the second equation:

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Multiple the equation by 3:

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Combine the equations to solve for a single variable (L):

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Use substitution to get the rest:

L - 9 = R\\(30) - 9 = R\\R = 21\\\\M = 2R\\M = 2(21)\\M = 42

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3 years ago
Eight times a number equals the number increased by 504. find the number.
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Hope this helps :)
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