(3-2n) +(4-3n) +(5-5n) =12+7 n

Question

(3-2n) +(4-3n) +(5-5n) =12+7 n

Answer 1

3-2n+4-3n+5-5n=12+7n
-2n-3n-5n-7n=12-3-4-5
-17n=0
n=0

Comments

спасибо большое

Answer 2

3-2n+4-3n+5-5n=12+7n
-17n=0
n=0