Whakaoti mō a
a=6
Tohaina
Kua tāruatia ki te papatopenga
-2+4a=4\left(\frac{5}{4}a-2\right)
Whakamahia te āhuatanga tohatoha hei whakarea te -2 ki te 1-2a.
-2+4a=4\times \frac{5}{4}a-8
Whakamahia te āhuatanga tohatoha hei whakarea te 4 ki te \frac{5}{4}a-2.
-2+4a=5a-8
Me whakakore te 4 me te 4.
-2+4a-5a=-8
Tangohia te 5a mai i ngā taha e rua.
-2-a=-8
Pahekotia te 4a me -5a, ka -a.
-a=-8+2
Me tāpiri te 2 ki ngā taha e rua.
-a=-6
Tāpirihia te -8 ki te 2, ka -6.
a=6
Me whakarea ngā taha e rua ki te -1.
Ngā Tauira
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