Question

Tìm x 3 (x+1) - 4 (x-2) = 5

Answer 1

\(\rightarrow3x+3-4x+8=5\\ \rightarrow3x-4x=5-3-8\\ \rightarrow-x=-6\\ \rightarrow x=6\)

 

 

Answer 2

\(3\left(x+1\right)-4\left(x-2\right)=5\\ \Leftrightarrow3x+3-4x+8=5\\ \Leftrightarrow3x+11-4x=5\\ \Leftrightarrow-x+11=5\\ \Leftrightarrow-x=-6\\ \Leftrightarrow x=6\)