JBa11er
JBa11er JBa11er
  • 03-11-2021
  • Mathematics
contestada

plz help me with this 4th one

plz help me with this 4th one class=

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l6rdx
l6rdx l6rdx
  • 03-11-2021
The answer to this equation is n=3
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annie413
annie413 annie413
  • 03-11-2021

Answer:

n=3

Step-by-step explanation:

First, combine like terms on both sides of the equation.

4n+3n-9=2n-5n+21

7n-9=-3n+21

Add 3n to both sides of the equation.

7n-9=-3n+21

10n-9=21

Add 9 to both sides of the equation.

10n-9=21

10n=30

Divide both sides by 10.

10n=30

n=3

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