Whakaoti mō w
w=-18
Tohaina
Kua tāruatia ki te papatopenga
14.4=4.2w+84-\left(-6\right)
Whakamahia te āhuatanga tohatoha hei whakarea te 4.2 ki te w+20.
14.4=4.2w+84+6
Ko te tauaro o -6 ko 6.
14.4=4.2w+90
Tāpirihia te 84 ki te 6, ka 90.
4.2w+90=14.4
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
4.2w=14.4-90
Tangohia te 90 mai i ngā taha e rua.
4.2w=-75.6
Tangohia te 90 i te 14.4, ka -75.6.
w=\frac{-75.6}{4.2}
Whakawehea ngā taha e rua ki te 4.2.
w=\frac{-756}{42}
Whakarohaina te \frac{-75.6}{4.2} mā te whakarea i te taurunga me te tauraro ki te 10.
w=-18
Whakawehea te -756 ki te 42, kia riro ko -18.
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