Whakaoti mō a
a=5
Tohaina
Kua tāruatia ki te papatopenga
2\left(a+2\right)=7\left(a-3\right)
Me whakarea ngā taha e rua o te whārite ki te 14, arā, te tauraro pātahi he tino iti rawa te kitea o 7,2.
2a+4=7\left(a-3\right)
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te a+2.
2a+4=7a-21
Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te a-3.
2a+4-7a=-21
Tangohia te 7a mai i ngā taha e rua.
-5a+4=-21
Pahekotia te 2a me -7a, ka -5a.
-5a=-21-4
Tangohia te 4 mai i ngā taha e rua.
-5a=-25
Tangohia te 4 i te -21, ka -25.
a=\frac{-25}{-5}
Whakawehea ngā taha e rua ki te -5.
a=5
Whakawehea te -25 ki te -5, kia riro ko 5.
Ngā Tauira
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