\(x-\dfrac{21}{12}=\dfrac{4}{18}\)
\(x=\dfrac{4}{18}+\dfrac{21}{12}\)
\(x=\dfrac{71}{36}\)
d) x - 21/12 = 4/18
x = 4/18 + 21/12
x = 71/36
\(x=\dfrac{4}{18}+\dfrac{21}{12}\\ x=\dfrac{8}{36}+\dfrac{63}{36}\\ x=\dfrac{71}{36}\)
\(x=\dfrac{4}{18}+\dfrac{21}{12}\)
\(x=\dfrac{8}{36}+\dfrac{63}{36}=\dfrac{71}{36}\)