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Tohaina

7a+1=5\left(a+1\right)
Pahekotia te 6a me a, ka 7a.
7a+1=5a+5
Whakamahia te āhuatanga tohatoha hei whakarea te 5 ki te a+1.
7a+1-5a=5
Tangohia te 5a mai i ngā taha e rua.
2a+1=5
Pahekotia te 7a me -5a, ka 2a.
2a=5-1
Tangohia te 1 mai i ngā taha e rua.
2a=4
Tangohia te 1 i te 5, ka 4.
a=\frac{4}{2}
Whakawehea ngā taha e rua ki te 2.
a=2
Whakawehea te 4 ki te 2, kia riro ko 2.