Datrys {l}{p=5/6}{q={(frac{7*{(2)}+1}{2})}-p}{text{Solvefor}rtext{where}}{r=q}

$$\left. \begin{array} { l } { p = \frac{5}{6} }\\ { q = {(\frac{7 \cdot {(2)} + 1}{2})} - p }\\ { \text{Solve for } r \text{ where} } \\ { r = q } \end{array} \right.$$

Datrys ar gyfer p, q, r

$$r = \frac{20}{3} = 6\frac{2}{3} \approx 6.666666667$$

Camau Ateb

Ystyriwch yr ail hafaliad. Mewnosod y gwerthoedd sy’n hysbys i’r hafaliad.

$$q=\frac{7\times 2+1}{2}-\frac{5}{6}$$

Lluosi 7 a 2 i gael 14.

$$q=\frac{14+1}{2}-\frac{5}{6}$$

Adio 14 a 1 i gael 15.

$$q=\frac{15}{2}-\frac{5}{6}$$

Tynnu \frac{5}{6} o \frac{15}{2} i gael \frac{20}{3}.

$$q=\frac{20}{3}$$

Ystyriwch y trydydd hafaliad. Mewnosod y gwerthoedd sy’n hysbys i’r hafaliad.

$$r=\frac{20}{3}$$

Mae’r system wedi’i datrys nawr.

$$p=\frac{5}{6} q=\frac{20}{3} r=\frac{20}{3}$$