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Tohaina

4+2m=7m
Whakamahia te āhuatanga tohatoha hei whakarea te 4 ki te 1+0.5m.
4+2m-7m=0
Tangohia te 7m mai i ngā taha e rua.
4-5m=0
Pahekotia te 2m me -7m, ka -5m.
-5m=-4
Tangohia te 4 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
m=\frac{-4}{-5}
Whakawehea ngā taha e rua ki te -5.
m=\frac{4}{5}
Ka taea te hautanga \frac{-4}{-5} te whakamāmā ki te \frac{4}{5} mā te tango tahi i te tohu tōraro i te taurunga me te tauraro.