Whakaoti mō x
x=3
Graph
Tohaina
Kua tāruatia ki te papatopenga
5\times 2x=3\left(x+7\right)
Tē taea kia ōrite te tāupe x ki -7 nā te kore tautuhi i te whakawehenga mā te kore. Me whakarea ngā taha e rua o te whārite ki te 5\left(x+7\right), arā, te tauraro pātahi he tino iti rawa te kitea o x+7,5.
10x=3\left(x+7\right)
Whakareatia te 5 ki te 2, ka 10.
10x=3x+21
Whakamahia te āhuatanga tohatoha hei whakarea te 3 ki te x+7.
10x-3x=21
Tangohia te 3x mai i ngā taha e rua.
7x=21
Pahekotia te 10x me -3x, ka 7x.
x=\frac{21}{7}
Whakawehea ngā taha e rua ki te 7.
x=3
Whakawehea te 21 ki te 7, kia riro ko 3.
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