Whakaoti mō x
x=38
Graph
Tohaina
Kua tāruatia ki te papatopenga
80\left(x-8\right)=2400
Whakareatia te 20 ki te 4, ka 80.
80x-640=2400
Whakamahia te āhuatanga tohatoha hei whakarea te 80 ki te x-8.
80x=2400+640
Me tāpiri te 640 ki ngā taha e rua.
80x=3040
Tāpirihia te 2400 ki te 640, ka 3040.
x=\frac{3040}{80}
Whakawehea ngā taha e rua ki te 80.
x=38
Whakawehea te 3040 ki te 80, kia riro ko 38.
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