Whakaoti mō x
x=42
Graph
Tohaina
Kua tāruatia ki te papatopenga
2x-3=81
Pūruatia ngā taha e rua o te whārite.
2x-3-\left(-3\right)=81-\left(-3\right)
Me tāpiri 3 ki ngā taha e rua o te whārite.
2x=81-\left(-3\right)
Mā te tango i te -3 i a ia ake anō ka toe ko te 0.
2x=84
Tango -3 mai i 81.
\frac{2x}{2}=\frac{84}{2}
Whakawehea ngā taha e rua ki te 2.
x=\frac{84}{2}
Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.
x=42
Whakawehe 84 ki te 2.
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