Whakaoti mō x
x=\frac{3}{4}=0.75
Graph
Tohaina
Kua tāruatia ki te papatopenga
7x-x-\left(-2\right)=1+4+2x
Hei kimi i te tauaro o x-2, kimihia te tauaro o ia taurangi.
7x-x+2=1+4+2x
Ko te tauaro o -2 ko 2.
6x+2=1+4+2x
Pahekotia te 7x me -x, ka 6x.
6x+2=5+2x
Tāpirihia te 1 ki te 4, ka 5.
6x+2-2x=5
Tangohia te 2x mai i ngā taha e rua.
4x+2=5
Pahekotia te 6x me -2x, ka 4x.
4x=5-2
Tangohia te 2 mai i ngā taha e rua.
4x=3
Tangohia te 2 i te 5, ka 3.
x=\frac{3}{4}
Whakawehea ngā taha e rua ki te 4.
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