Whakaoti mō x
x=-\frac{2}{3}\approx -0.666666667
Graph
Tohaina
Kua tāruatia ki te papatopenga
-2+2x=5\times 2\times 0.5x
Tangohia te 4 i te 2, ka -2.
-2+2x=10\times 0.5x
Whakareatia te 5 ki te 2, ka 10.
-2+2x=5x
Whakareatia te 10 ki te 0.5, ka 5.
-2+2x-5x=0
Tangohia te 5x mai i ngā taha e rua.
-2-3x=0
Pahekotia te 2x me -5x, ka -3x.
-3x=2
Me tāpiri te 2 ki ngā taha e rua. Ko te tau i tāpiria he kore ka hua koia tonu.
x=\frac{2}{-3}
Whakawehea ngā taha e rua ki te -3.
x=-\frac{2}{3}
Ka taea te hautanga \frac{2}{-3} te tuhi anō ko -\frac{2}{3} mā te tango i te tohu tōraro.
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