1м = 100см
3/4 метра = 75см.
1.12512:8 =1564
8
45
40
51
48
32
2. 1564*40 =6256
4
6256
3. 7560*3=22680
3
2268+0 ( в конце)
4. 22680-6256 = 16424
6256
16424
5. 16424+13999 = 30423
13999
30423
Ответ : 30423
Решение
3^(x + 4) - 5^(x + 3) = 3*x - 5^(x + 2)
(3^x)*(3⁴) - (5^x)*(5³) = 3^x - (5^x)*(5²)
(3^x)*(3⁴) - 3^x = (5^x)*(5³) - (5^x)*(5²)
(3^x)*(3⁴ - 1) = (5^x)*(5³ - 5²)
(3^x)*80 = (5^x)*100
(3/5)^x = 100/80
(3/5)^x = 10/8
(3/5)^x = 5/4
log₃/₅ [(3/5)^x] = log₃/₅ (5/4)
x = log₃/₅ (5/4)