Whakaoti mō x
x=-7
Graph
Tohaina
Kua tāruatia ki te papatopenga
-2x+8-2\left(x+7\right)=22
Whakamahia te āhuatanga tohatoha hei whakarea te -2 ki te x-4.
-2x+8-2x-14=22
Whakamahia te āhuatanga tohatoha hei whakarea te -2 ki te x+7.
-4x+8-14=22
Pahekotia te -2x me -2x, ka -4x.
-4x-6=22
Tangohia te 14 i te 8, ka -6.
-4x=22+6
Me tāpiri te 6 ki ngā taha e rua.
-4x=28
Tāpirihia te 22 ki te 6, ka 28.
x=\frac{28}{-4}
Whakawehea ngā taha e rua ki te -4.
x=-7
Whakawehea te 28 ki te -4, kia riro ko -7.
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