Toán { A e N| A= 31 – x| x = ( 90 : 45 + 15 ) } suy ra = ? e = thuoc 23/09/2021 By Lyla { A e N| A= 31 – x| x = ( 90 : 45 + 15 ) } suy ra = ? e = thuoc
Ta có : \(90:45 + 15 = 2 + 15 = 17\) \(\begin{array}{l} \Rightarrow A = 31 – x = 31 – 17 = 14\\ \Rightarrow \left\{ {14} \right\}\end{array}\) Trả lời
Ta có : \(90:45 + 15 = 2 + 15 = 17\)
\(\begin{array}{l} \Rightarrow A = 31 – x = 31 – 17 = 14\\ \Rightarrow \left\{ {14} \right\}\end{array}\)