2x - 1/5 = 7/15
2x = 7/15 + 1/5
2x = 2/3
x = 2/3 : 2
x = 2/6 = 1/3
\(2x-\dfrac{1}{5}=-\dfrac{7}{15}\)
\(2x=-\dfrac{7}{15}+\dfrac{1}{5}=\dfrac{2}{3}\)
\(x=\dfrac{2}{3}:2=\dfrac{1}{3}\)
2x - 1/5 = -7/15
2x = -7/15 + 1/5
2x = -7/15 + 3/15
2x = -4/15
x = -4/15 : 2
x = -4/30
\(2x-\dfrac{1}{5}=-\dfrac{1}{3}:\dfrac{5}{7}\)
\(2x-\dfrac{1}{5}=-\dfrac{1}{3}\times\dfrac{7}{5}\)
\(2x-\dfrac{1}{5}=-\dfrac{7}{15}\)
\(2x=-\dfrac{7}{15}+\dfrac{1}{5}\)
\(2x=-\dfrac{4}{15}\)
\(x=-\dfrac{4}{15}:2\)
\(x=-\dfrac{2}{15}\)
2x−15=−13×752x−15=−13×75
2x=−715+152x=−715+15
x=−415:2x=−415:2
