Whakaoti mō f, x
x=-10
f=-5
Tohaina
Kua tāruatia ki te papatopenga
f=-5
Whakaarohia te whārite tuarua. Whakawehea ngā taha e rua ki te 1.
-5\left(x+2\right)=x-5x
Whakaarohia te whārite tuatahi. Me kōkuhu ngā uara tāupe mōhiotia ki te whārite.
-5x-10=x-5x
Whakamahia te āhuatanga tohatoha hei whakarea te -5 ki te x+2.
-5x-10=-4x
Pahekotia te x me -5x, ka -4x.
-5x-10+4x=0
Me tāpiri te 4x ki ngā taha e rua.
-x-10=0
Pahekotia te -5x me 4x, ka -x.
-x=10
Me tāpiri te 10 ki ngā taha e rua. Ko te tau i tāpiria he kore ka hua koia tonu.
x=-10
Whakawehea ngā taha e rua ki te -1.
f=-5 x=-10
Kua oti te pūnaha te whakatau.
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