Whakaoti mō x
x = -\frac{7}{5} = -1\frac{2}{5} = -1.4
Graph
Tohaina
Kua tāruatia ki te papatopenga
7x+1-2x=-6
Tangohia te 2x mai i ngā taha e rua.
5x+1=-6
Pahekotia te 7x me -2x, ka 5x.
5x=-6-1
Tangohia te 1 mai i ngā taha e rua.
5x=-7
Tangohia te 1 i te -6, ka -7.
x=\frac{-7}{5}
Whakawehea ngā taha e rua ki te 5.
x=-\frac{7}{5}
Ka taea te hautanga \frac{-7}{5} te tuhi anō ko -\frac{7}{5} mā te tango i te tohu tōraro.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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Poukapa
\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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Whakaurunga
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