Whakaoti mō k
k=\frac{22}{25}=0.88
Tohaina
Kua tāruatia ki te papatopenga
-2+5\left(2\times 2+1\right)k=20
Me whakarea ngā taha e rua o te whārite ki te 10, arā, te tauraro pātahi he tino iti rawa te kitea o 5,2.
-2+5\left(4+1\right)k=20
Whakareatia te 2 ki te 2, ka 4.
-2+5\times 5k=20
Tāpirihia te 4 ki te 1, ka 5.
-2+25k=20
Whakareatia te 5 ki te 5, ka 25.
25k=20+2
Me tāpiri te 2 ki ngā taha e rua.
25k=22
Tāpirihia te 20 ki te 2, ka 22.
k=\frac{22}{25}
Whakawehea ngā taha e rua ki te 25.
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