1/4 + 1/3 : (2x - 1) = -5
=> 1/3 : (2x - 1) = -21/4
=> 2x - 1 = -63/4
=> 2x = -59/4
=> x = -59/8
\(\frac{1}{4}+\frac{1}{3}:\left(2x-1\right)=-5\)
\(\frac{1}{3}:\left(2x-1\right)=\left(-5\right)-\frac{1}{4}\)
\(\frac{1}{3}:\left(2x-1\right)=\frac{-21}{4}\)
\(2x-1=\frac{1}{3}:\frac{-21}{4}\)
\(2x-1=\frac{-4}{63}\)
\(2x=\frac{-4}{63}+1\)
\(2x=\frac{59}{63}\)
\(x=\frac{59}{63}:2\)
\(x=\frac{59}{126}\)
1/4 + 1/3 : ( 2x - 1 ) = -5
1/3 : ( 2x - 1 ) = - 5 - 1/4
1/3 : ( 2x - 1 ) = -21/4
2x - 1 = 1/3 : ( - 21/4 )
2x - 1 = -4/63
2x = ( -4/63 ) + 1
2x = 59/63
x = 59/126
Vậy x = 59/126