Whakaoti mō x
x=-\frac{2}{7}\approx -0.285714286
Graph
Tohaina
Kua tāruatia ki te papatopenga
x-2-8x=0
Tangohia te 8x mai i ngā taha e rua.
-7x-2=0
Pahekotia te x me -8x, ka -7x.
-7x=2
Me tāpiri te 2 ki ngā taha e rua. Ko te tau i tāpiria he kore ka hua koia tonu.
x=\frac{2}{-7}
Whakawehea ngā taha e rua ki te -7.
x=-\frac{2}{7}
Ka taea te hautanga \frac{2}{-7} te tuhi anō ko -\frac{2}{7} mā te tango i te tohu tōraro.
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