Whakaoti mō x
x=-70
Graph
Tohaina
Kua tāruatia ki te papatopenga
0.03x-0.9-0.05x=0.5
Tangohia te 0.05x mai i ngā taha e rua.
-0.02x-0.9=0.5
Pahekotia te 0.03x me -0.05x, ka -0.02x.
-0.02x=0.5+0.9
Me tāpiri te 0.9 ki ngā taha e rua.
-0.02x=1.4
Tāpirihia te 0.5 ki te 0.9, ka 1.4.
x=\frac{1.4}{-0.02}
Whakawehea ngā taha e rua ki te -0.02.
x=\frac{140}{-2}
Whakarohaina te \frac{1.4}{-0.02} mā te whakarea i te taurunga me te tauraro ki te 100.
x=-70
Whakawehea te 140 ki te -2, kia riro ko -70.
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