-19+4(2-x)=25-x
-19 + 8 - 4x = 25-x
-4x + x = 25 - 8 + 19
-3x = 36
x = 36 : (-3)
x = -12.
Hok tốt !
-19+4(2-x)=25-x
<=>-19+8-4x=25-x
<=>-11-4x-25+x=0
<=>-36-3x=0
<=>3x=-36
<=>x=-12
Vậy x=-12
\(\Leftrightarrow-19+8-4x=25-x\)
\(\Leftrightarrow-19+8-4x-25+x=0\)
\(\Leftrightarrow-36-3x=0\)
\(\Leftrightarrow-3\left(12-x\right)=0\)
\(\Leftrightarrow12-x=0\)
\(\Leftrightarrow x=12\)
#quankun^^
Trả lời:
\(-19+4\left(2-x\right)=25-x\)
\(-19+8-4x=25-x\)
\(-11-4x=25-x\)
\(4x-x=-11-25\)
\(3x=-36\)
\(x=-12\)
Vậy \(x=-12\)
Hok tốt!
Vuong Dong Yet
