Whakaoti mō x
x=34
Graph
Tohaina
Kua tāruatia ki te papatopenga
80\left(x-4\right)=2400
Whakareatia te 20 ki te 4, ka 80.
80x-320=2400
Whakamahia te āhuatanga tohatoha hei whakarea te 80 ki te x-4.
80x=2400+320
Me tāpiri te 320 ki ngā taha e rua.
80x=2720
Tāpirihia te 2400 ki te 320, ka 2720.
x=\frac{2720}{80}
Whakawehea ngā taha e rua ki te 80.
x=34
Whakawehea te 2720 ki te 80, kia riro ko 34.
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