Réitigh do x. (complex solution)
\left\{\begin{matrix}x=-\frac{y-69}{C}\text{, }&C\neq 0\\x\in \mathrm{C}\text{, }&y=69\text{ and }C=0\end{matrix}\right.
Réitigh do x.
\left\{\begin{matrix}x=-\frac{y-69}{C}\text{, }&C\neq 0\\x\in \mathrm{R}\text{, }&y=69\text{ and }C=0\end{matrix}\right.
Graf
Tráth na gCeist
Linear Equation
\left. \begin{array} { l } { C x + y = 69 ) C - 7 } \\ { 2 x + y = 87 } \end{array} \right.
Roinn
Cóipeáladh go dtí an ghearrthaisce
Cx=69-y
Bain y ón dá thaobh.
\frac{Cx}{C}=\frac{69-y}{C}
Roinn an dá thaobh faoi C.
x=\frac{69-y}{C}
Má roinntear é faoi C cuirtear an iolrúchán faoi C ar ceal.
Cx=69-y
Bain y ón dá thaobh.
\frac{Cx}{C}=\frac{69-y}{C}
Roinn an dá thaobh faoi C.
x=\frac{69-y}{C}
Má roinntear é faoi C cuirtear an iolrúchán faoi C ar ceal.
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