(4n+3n)•11=154 (19n-6n):4=26
(4n+3n)*11=154 7n*11=154 7n=154:11 7n=14 n=14:7 n=2 ======================= (19n-6n):4=26 13n:4=26 13n=26*4 13n=104 n=104:13 n=8