Răspuns:
Salutare!
[(2×X-5):5]×5=5×13
[(2×X-5):5]×5=65
[(2×X-5):5]=65:5
[(2×X-5):5]=13
(2×X-5)=13×5
(2×X-5)=65
2×X=65+5
2×X=70
X=70:2
X=35
#Succes!
[tex]((2x - 5) \div 5) \times 5 = 13 \times 5 \\ (2x - 5) \div 5 = 13 \div 5 \times 5\\ 2x - 5= 13 \times 5 \\ 2x = 65 + 5 \\ 2x = 70 \\ x = 70 \div 2 \\ x = 35 [/tex]
…ᘛ⁐̤ᕐᐷ…ᘛ⁐̤ᕐᐷฅ^•ﻌ•^ฅ
