a) x : 1/6 = 3
x = 3 x 1/6
x = 1/2
b) 3/7 + x = 2/7 + 1
3/7 + x = 9/7
x = 9/7 - 3/7
x = 6/7
\(x:\dfrac{1}{6}=3\)
\(x=\dfrac{1}{6}\times3=\dfrac{3}{6}=\dfrac{1}{2}\)
\(\dfrac{3}{7}+x=\dfrac{2}{7}+1\)
\(\dfrac{3}{7}+x=\dfrac{2}{7}+\dfrac{1}{1}=\dfrac{2}{7}+\dfrac{7}{7}=\dfrac{9}{7}\)
\(x=\dfrac{9}{7}-\dfrac{3}{7}=\dfrac{6}{7}\)
\(a.x:\dfrac{1}{6}=3\)
\(x=3\times\dfrac{1}{6}=\dfrac{1}{2}\)
\(b.\dfrac{3}{7}+x=\dfrac{2}{7}+1\)
\(x=1+\dfrac{2}{7}-\dfrac{3}{7}=\dfrac{6}{7}\)
\(a,x:\dfrac{1}{6}=3\)
\(x=3x\dfrac{1}{6}\)
\(x=\dfrac{1}{2}\)
\(b,\dfrac{3}{7}+x=\dfrac{2}{7}+1\)
\(\dfrac{3}{7}+x=\dfrac{9}{7}\)
\(x=\dfrac{9}{7}-\dfrac{3}{7}\)
\(x=\dfrac{6}{7}\)