Trang chủ » Hỏi đáp » Môn Toán A)x+2/5=1/2 b)x+3/7=2/5+3/10 C)19/20-x=3/4 13/10/2023 A)x+2/5=1/2 b)x+3/7=2/5+3/10 C)19/20-x=3/4
a) x + 2/5 = 1/2 => x = 1/2 – 2/5 => x = 1/10 Vậy x/10 b) x + 3/7 = 2/5 + 3/10 => x + 3/7 = 7/10 => x = 7/10 – 3/7 => x = 19/70 Vậy x = 19/70 c) 19/20 – x = 3/4 => x = 19/20 – 3/4 => x = 1/5 Vậy x = 1/5 color{cyan}{@SunDayy} Trả lời
x + 2/5 = 1/2 x = 1/2 – 2/5 x = 1/10 ——————— x + 3/7 = 2/5 + 3/10 x + 3/7 = 7/10 x = 7/10 – 3/7 x = 19/70 —————————– 19/20 – x = 3/4 x = 19/20 – 3/4 x = 1/5 Trả lời
2 bình luận về “A)x+2/5=1/2 b)x+3/7=2/5+3/10 C)19/20-x=3/4”