Whakaoti mō x
x=17
Graph
Tohaina
Kua tāruatia ki te papatopenga
5x-40+2x=79
Whakamahia te āhuatanga tohatoha hei whakarea te -2 ki te 20-x.
7x-40=79
Pahekotia te 5x me 2x, ka 7x.
7x=79+40
Me tāpiri te 40 ki ngā taha e rua.
7x=119
Tāpirihia te 79 ki te 40, ka 119.
x=\frac{119}{7}
Whakawehea ngā taha e rua ki te 7.
x=17
Whakawehea te 119 ki te 7, kia riro ko 17.
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