Question #15fe4

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Answer 1 · 2017-09-19T21:37:38

#n = 6#

Step one: collect like-terms

#7n+3=45#

7n + (2+1) = 45

Step two: : subtract both sides by 3

#7n = 42#

7n + 3 -3 = 45 *-3
7n = *42

Step three : divide both sides by 7

Ans is #n = 6#

Answer 2 · 2017-09-19T21:41:43

# n = 6 #

Combine like terms:
#7n + (2+1) = 45#
#7n + 3 = 45#

Isolate the variable:
#7n + 3 -3 = 45 -3#
#7n = 42#
#(7n)/7 = 42/7#

#n = 6#