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Whakaoti mō x
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Tohaina

40x-24+9\left(7+x\right)=137
Whakamahia te āhuatanga tohatoha hei whakarea te 8 ki te 5x-3.
40x-24+63+9x=137
Whakamahia te āhuatanga tohatoha hei whakarea te 9 ki te 7+x.
40x+39+9x=137
Tāpirihia te -24 ki te 63, ka 39.
49x+39=137
Pahekotia te 40x me 9x, ka 49x.
49x=137-39
Tangohia te 39 mai i ngā taha e rua.
49x=98
Tangohia te 39 i te 137, ka 98.
x=\frac{98}{49}
Whakawehea ngā taha e rua ki te 49.
x=2
Whakawehea te 98 ki te 49, kia riro ko 2.