2n +9+5n=30 need help on this

asked Jul 3, 2018 158k views

1 vote

by Aryn

6.2k points

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3 votes

n = 3

add like terms: 7n + 9 = 30
subtract 9 from both sides: 7n = 21
divide 7 from both sides
n = 3

6.0k points

5 votes

2n+9+5n=30 combine like terms on left side

7n+9=30 subtract 9 from both sides

7n=21 divide both sides by 7

n=3

Levans answered Jul 10, 2018

5.9k points

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