Whakaoti mō y
y = -\frac{25}{14} = -1\frac{11}{14} \approx -1.785714286
Graph
Tohaina
Kua tāruatia ki te papatopenga
15y+25=y
Whakamahia te āhuatanga tohatoha hei whakarea te 3y+5 ki te 5.
15y+25-y=0
Tangohia te y mai i ngā taha e rua.
14y+25=0
Pahekotia te 15y me -y, ka 14y.
14y=-25
Tangohia te 25 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
y=\frac{-25}{14}
Whakawehea ngā taha e rua ki te 14.
y=-\frac{25}{14}
Ka taea te hautanga \frac{-25}{14} te tuhi anō ko -\frac{25}{14} mā te tango i te tohu tōraro.
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