\(\frac{150}{x-1}-\frac{140}{x-1}=5\left(ĐK:x\ne1\right)\)
\(\Leftrightarrow\frac{10}{x-1}=5\)
\(\Leftrightarrow x-1=2\)
\(\Leftrightarrow x=3\)
ĐKXĐ: x-1\(\ne\)0=> x\(\ne\)1
=> \(\frac{150-140}{x-1}\)=5
=> \(\frac{10}{x-1}\)=5
=> 10= 5(x-1)=> x-1=2=> x=1(ko thỏa mã ĐKXĐ x\(\ne\)1)
phương trình này vô nghiệm.
\(\frac{150}{x-1}-\frac{140}{x-1}\)= 5
\(\frac{150-140}{x-1}=5\)
\(\frac{10}{x-1}=5\)
\(\frac{10}{x-1}=\frac{5x-5}{x-1}\)
10 = 5x - 5
-5x = -10 - 5
-5x = -15
x = -15 : -5
x = 3