What is 7n+2[3(1-n)-2(1+n)]=14

Mathematics

2 answers:

ozzi3 years ago

4 0

Answer:

Step-by-step explanation:just ask for help from a teacher

Katyanochek1 [597]3 years ago

3 0

Answer:

n = (-4)

Step-by-step explanation:

Firstly expand the bracket

;2[3(1 - n) -2(1+n)]

;2[ 3 - 3n - 2 - 2n ]

;2[ -5n + 1 ]

; -10n + 2

then go back to the question and substitute the bracket with the simplified form above,

; 7n - 10n + 2 = 14

; -3n = 14 - 2

; -3n = 12...then divide both sides by (-3)

;Hence... n = (-4)

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