Whakaoti mō Q
Q=40
Tohaina
Kua tāruatia ki te papatopenga
590-3\left(-10+3Q\right)=20+6Q
Pahekotia te 2Q me Q, ka 3Q.
590+30-9Q=20+6Q
Whakamahia te āhuatanga tohatoha hei whakarea te -3 ki te -10+3Q.
620-9Q=20+6Q
Tāpirihia te 590 ki te 30, ka 620.
620-9Q-6Q=20
Tangohia te 6Q mai i ngā taha e rua.
620-15Q=20
Pahekotia te -9Q me -6Q, ka -15Q.
-15Q=20-620
Tangohia te 620 mai i ngā taha e rua.
-15Q=-600
Tangohia te 620 i te 20, ka -600.
Q=\frac{-600}{-15}
Whakawehea ngā taha e rua ki te -15.
Q=40
Whakawehea te -600 ki te -15, kia riro ko 40.
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