Whakaoti mō y
y=3
Graph
Tohaina
Kua tāruatia ki te papatopenga
13y-31=8
Pahekotia te 9y me 4y, ka 13y.
13y=8+31
Me tāpiri te 31 ki ngā taha e rua.
13y=39
Tāpirihia te 8 ki te 31, ka 39.
y=\frac{39}{13}
Whakawehea ngā taha e rua ki te 13.
y=3
Whakawehea te 39 ki te 13, kia riro ko 3.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
whārite Simultaneous
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Whakarerekētanga
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