3 years ago

Please awnser this as soon as possible.

Mathematics

1 answer:

Over [174]3 years ago

8 0

2( n+7)-7=9

multiply the bracket by 2

(2)(n)=2n

(2)(7)=14

2n+14-7=9

2n+7=9

move +7 to the other side

sign changes from +7 to -7

2n+7-7=9-7

2n=9-7

2n=2

divide both sides by 2 to get n by itself

2n/2=2/2

Answer:

n=1

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