Whakaoti mō x
x = -\frac{15}{4} = -3\frac{3}{4} = -3.75
Graph
Tohaina
Kua tāruatia ki te papatopenga
x-15=5x
Pahekotia te 2x me -x, ka x.
x-15-5x=0
Tangohia te 5x mai i ngā taha e rua.
-4x-15=0
Pahekotia te x me -5x, ka -4x.
-4x=15
Me tāpiri te 15 ki ngā taha e rua. Ko te tau i tāpiria he kore ka hua koia tonu.
x=\frac{15}{-4}
Whakawehea ngā taha e rua ki te -4.
x=-\frac{15}{4}
Ka taea te hautanga \frac{15}{-4} te tuhi anō ko -\frac{15}{4} mā te tango i te tohu tōraro.
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