(4n+3n)*11=154 (19n-6n):4=26 (17n-8n)*13=351
1)(4n+3n)·11=154 7n·11=154 77n=154 n=154:77 n=2 2)(19n-6n):4=26 13n =26·4 13n=104 n=104:13 n=8 3)(17n-8n)·13=351 9n·13=351 9n=27 n=27:9 n=3
77n=154 N=2; 13n=26*4 n=8; 117n=351 n=3