Whakaoti mō y
y=-20
Graph
Tohaina
Kua tāruatia ki te papatopenga
7y+35-5\left(y-1\right)=0
Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te y+5.
7y+35-5y+5=0
Whakamahia te āhuatanga tohatoha hei whakarea te -5 ki te y-1.
2y+35+5=0
Pahekotia te 7y me -5y, ka 2y.
2y+40=0
Tāpirihia te 35 ki te 5, ka 40.
2y=-40
Tangohia te 40 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
y=\frac{-40}{2}
Whakawehea ngā taha e rua ki te 2.
y=-20
Whakawehea te -40 ki te 2, kia riro ko -20.
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]
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Whakarerekētanga
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Whakaurunga
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