Whakaoti mō x
x=2
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Tohaina
Kua tāruatia ki te papatopenga
7x-7-\left(x-5\right)=10
Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te x-1.
7x-7-x-\left(-5\right)=10
Hei kimi i te tauaro o x-5, kimihia te tauaro o ia taurangi.
7x-7-x+5=10
Ko te tauaro o -5 ko 5.
6x-7+5=10
Pahekotia te 7x me -x, ka 6x.
6x-2=10
Tāpirihia te -7 ki te 5, ka -2.
6x=10+2
Me tāpiri te 2 ki ngā taha e rua.
6x=12
Tāpirihia te 10 ki te 2, ka 12.
x=\frac{12}{6}
Whakawehea ngā taha e rua ki te 6.
x=2
Whakawehea te 12 ki te 6, kia riro ko 2.
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