x - x - 5 - 8 + x = 144
=> x - 13 = 144
=> x = 144 + 13
=> x = 157
Vậy ...
\(x-x-5-8+x=144\)
\(x-x+x=144+5+8\)
\(\Leftrightarrow x=157\)
Chúc em học tốt!!!
\(x-x-5-8+x=144\)
\(\Leftrightarrow0-5-8+x=144\)
\(\Leftrightarrow-5-8+x=144\)
\(\Leftrightarrow-13+x=144\)
\(\Leftrightarrow x=144+13\)
\(\Leftrightarrow x=157\)
\(\text{Vậy }x=157\)
x - x - 5 - 8 + x = 144
x - x + x = 144 + 5 + 8
x = 157