Whakaoti mō r
r = \frac{21}{4} = 5\frac{1}{4} = 5.25
Tohaina
Kua tāruatia ki te papatopenga
r=-7\left(-\frac{3}{4}\right)
Me whakarea ngā taha e rua ki te -\frac{3}{4}, te tau utu o -\frac{4}{3}.
r=\frac{-7\left(-3\right)}{4}
Tuhia te -7\left(-\frac{3}{4}\right) hei hautanga kotahi.
r=\frac{21}{4}
Whakareatia te -7 ki te -3, ka 21.
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