Whakaoti mō x
x=3
Graph
Tohaina
Kua tāruatia ki te papatopenga
88-8x-7\left(3x-2\right)=15
Whakamahia te āhuatanga tohatoha hei whakarea te 8 ki te 11-x.
88-8x-21x+14=15
Whakamahia te āhuatanga tohatoha hei whakarea te -7 ki te 3x-2.
88-29x+14=15
Pahekotia te -8x me -21x, ka -29x.
102-29x=15
Tāpirihia te 88 ki te 14, ka 102.
-29x=15-102
Tangohia te 102 mai i ngā taha e rua.
-29x=-87
Tangohia te 102 i te 15, ka -87.
x=\frac{-87}{-29}
Whakawehea ngā taha e rua ki te -29.
x=3
Whakawehea te -87 ki te -29, 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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