Решите уравнения: 28*(х+5)=224 144:(х-3)=36 (х+67):18=4 (4n+3n)*11=154 (19n-6n):4=26 (17n-8n)*13=354
28*(х+5)=224 28х+140=224 28х=224-140 28х=84 х=84/28 х=3 144:(х-3)=36 144=36(х-3) 144=36х-108 144+108=36х 252=36х х=252/36 х=7 (х+67):18=4 18*4=х+67 72=х+67 72-67=х х=5 (4n+3n)*11=154 44n+33n=154 77n=154 n=154/77 n=2 (19n-6n):4=26 19n-6n=4*26 13n=104 n=104/13 n=8 (17n-8n)*13=354 221n-104n=354 117n=354 n=354/117
28х-84=0 28х+140-224=0 28х-84=0 х=84/28=3 144/х-3-36=0 х/18+67/18-4=0 х/18+3,72-4=0 х/18-0,27=0 х=0,27*18=5 7н*11-154=0 77н-154=0 н=154/77=2 13н/4-26=0 3,25н-26=0 н=26/3,25=8 9н*13-354=0 117н-354=0 н=354/117=3,02