3^4х+2*16/9*4^2х+2=5 1/16

3^4 x+2×16/9×4^2 x+2 = 81/16 (1241 x)/9+2 = 81/16 (1241 x)/9+2 = (1241 x)/9+18/9: (1241 x)/9+18/9 = 81/16 (9 (1241 x+18))/9 = 9×81/16 9×81/16 = (9×81)/16: (9 (1241 x+18))/9 = (9×81)/16 (9 (1241 x+18))/9 = 9/9×(1241 x+18) = 1241 x+18: 1241 x+18 = (9×81)/16 9×81 = 729: 1241 x+18 = 729/16 1241 x+(18-18) = 729/16-18 18-18 = 0: 1241 x = 729/16-(18×16)/16 16 (-18) = -288: 1241 x = 729/16+-288/16 729/16-(288)/16 = (729-288)/16: 1241 x = (729-288)/16 729-288 = 441: 1241 x = 441/16 x = 441/(16×1241) 16×1241 = 19856: Answer: | x = 441/19856