Whakaoti mō x
x=-3
Graph
Tohaina
Kua tāruatia ki te papatopenga
-5x+5=20
Ko te tauaro o -5 ko 5.
-5x=20-5
Tangohia te 5 mai i ngā taha e rua.
-5x=15
Tangohia te 5 i te 20, ka 15.
x=\frac{15}{-5}
Whakawehea ngā taha e rua ki te -5.
x=-3
Whakawehea te 15 ki te -5, kia riro ko -3.
Ngā Tauira
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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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