Whakaoti mō m
m=3
Tohaina
Kua tāruatia ki te papatopenga
7m=3\left(m+4\right)
Me whakarea ngā taha e rua o te whārite ki te 21, arā, te tauraro pātahi he tino iti rawa te kitea o 3,7.
7m=3m+12
Whakamahia te āhuatanga tohatoha hei whakarea te 3 ki te m+4.
7m-3m=12
Tangohia te 3m mai i ngā taha e rua.
4m=12
Pahekotia te 7m me -3m, ka 4m.
m=\frac{12}{4}
Whakawehea ngā taha e rua ki te 4.
m=3
Whakawehea te 12 ki te 4, kia riro ko 3.
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