Whakaoti mō x
x=\frac{5}{13}\approx 0.384615385
Graph
Tohaina
Kua tāruatia ki te papatopenga
20x-25=15\left(10x-5\right)
Whakamahia te āhuatanga tohatoha hei whakarea te 5 ki te 4x-5.
20x-25=150x-75
Whakamahia te āhuatanga tohatoha hei whakarea te 15 ki te 10x-5.
20x-25-150x=-75
Tangohia te 150x mai i ngā taha e rua.
-130x-25=-75
Pahekotia te 20x me -150x, ka -130x.
-130x=-75+25
Me tāpiri te 25 ki ngā taha e rua.
-130x=-50
Tāpirihia te -75 ki te 25, ka -50.
x=\frac{-50}{-130}
Whakawehea ngā taha e rua ki te -130.
x=\frac{5}{13}
Whakahekea te hautanga \frac{-50}{-130} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te -10.
Ngā Tauira
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