Q14 of 80 Page 45

Solve the following equation:

3 (n – 4) + 2 (4n – 5) = 5 (n + 2) + 16

Given equation: 3 (n – 4) + 2 (4n – 5) = 5 (n + 2) + 16

3n – 12 + 8n – 10 = 5n + 10 + 16 (Removing brackets)


3n + 8n – 12 – 10 = 5n + 26


11n – 22 = 5n + 26


11n – 5n = 26 + 22 (Transposing 5n to LHS and 22 to


RHS)


6n = 48


n = (Transposing 6 to RHS)


n = 8


The solution of 3 (n – 4) + 2 (4n – 5) = 5 (n + 2) + 16 is


n = 8.


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