Question

Tìm A biết A : 3= A - 160

Answer 1

\(A:3=A-160\\ \Rightarrow\dfrac{A}{3}=A-160\\ \Rightarrow A=3A-480\\ \Rightarrow3A-A-480=0\\ \Rightarrow2A-480=0\\ \Rightarrow2A=480\\ \Rightarrow A=240\)

Answer 2

A=163

Answer 3

A:3=A−160⇒A3=A−160⇒A=3A−480⇒3A−A−480=0⇒2A−480=0⇒2A=480⇒A=240