a) 3/4 - x = 1 c) x - 1/5 = 2
x = 3/4 - 1 x = 2 + 1/5
x = -1/4 x = 11/5
Vậy x = -1/4 Vậy x = 11/5
b) x+4 = 1/5 d) x + 5/3 = 1/81
x = 1/5 -4 x = 1/81 -5/3
x = -19/5 x = -134/81
Vậy x = -19/5
a) 3/4 - x = 1
\(x=\frac{3}{4}-1\)
\(x=\frac{-1}{4}\)
b) x + 4 = 1/5
\(x=\frac{1}{5}-4\)
\(x=\frac{-19}{5}\)
c) x - 1/5 = 2
\(x=2+\frac{1}{5}\)
\(x=\frac{11}{5}\)
d) x + 5/3 = 1/81
\(x=\frac{1}{81}-\frac{5}{3}\)
\(x=\frac{-134}{81}\)
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