angeline2004 angeline2004

30-01-2019
Mathematics

contestada

7(n+4)=21 n=? Help thank uu

Respuesta :

lillysiege lillysiege

30-01-2019

Answer:

n = -1

Step-by-step explanation:

7(n+4) = 21

factor out the 7

7n + 28 = 21

subtract 28 from both sides

7n = -7

divide both sides by 7

n = -1

Answer Link

30-01-2019

Answer:

n = -1

Step-by-step explanation:

7(n + 4) = 21 divide both sides by 7

n + 4 = 3 subtract 4 from both sides

n + 4 - 4 = 3 - 4

n = -1

Answer Link

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