Whakaoti mō x
x=\frac{10}{13}\approx 0.769230769
Graph
Tohaina
Kua tāruatia ki te papatopenga
7x+7+2\left(3x-1\right)=15
Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te x+1.
7x+7+6x-2=15
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te 3x-1.
13x+7-2=15
Pahekotia te 7x me 6x, ka 13x.
13x+5=15
Tangohia te 2 i te 7, ka 5.
13x=15-5
Tangohia te 5 mai i ngā taha e rua.
13x=10
Tangohia te 5 i te 15, ka 10.
x=\frac{10}{13}
Whakawehea ngā taha e rua ki te 13.
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