Whakaoti mō a
a=60
Tohaina
Kua tāruatia ki te papatopenga
80-3.2a+2.7a=50
Whakamahia te āhuatanga tohatoha hei whakarea te 3.2 ki te 25-a.
80-0.5a=50
Pahekotia te -3.2a me 2.7a, ka -0.5a.
-0.5a=50-80
Tangohia te 80 mai i ngā taha e rua.
-0.5a=-30
Tangohia te 80 i te 50, ka -30.
a=\frac{-30}{-0.5}
Whakawehea ngā taha e rua ki te -0.5.
a=\frac{-300}{-5}
Whakarohaina te \frac{-30}{-0.5} mā te whakarea i te taurunga me te tauraro ki te 10.
a=60
Whakawehea te -300 ki te -5, kia riro ko 60.
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