Whakaoti mō x
x=10
Graph
Tohaina
Kua tāruatia ki te papatopenga
40-x=\left(10-7\right)x
Tāpirihia te 10 ki te 30, ka 40.
40-x=3x
Tangohia te 7 i te 10, ka 3.
40-x-3x=0
Tangohia te 3x mai i ngā taha e rua.
40-4x=0
Pahekotia te -x me -3x, ka -4x.
-4x=-40
Tangohia te 40 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
x=\frac{-40}{-4}
Whakawehea ngā taha e rua ki te -4.
x=10
Whakawehea te -40 ki te -4, kia riro ko 10.
Ngā Tauira
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