Tìm x biết: 105 - [(2x + 7) - 13]
Giải thích
105 – [(2x + 7) – 13] = 25
105 – (2x + 7 – 13) – 25 = 0
105 – 2x – 7 + 13 – 25 = 0
86 – 2x = 0
x = 43
Vậy x = 43.
105 – [(2x + 7) – 13] = 25
105 – (2x + 7 – 13) – 25 = 0
105 – 2x – 7 + 13 – 25 = 0
86 – 2x = 0
x = 43
Vậy x = 43.