Whakaoti mō r
r\geq \frac{8}{7}
Pātaitai
Algebra
7 ( r - 3 ) \geq - 13
Tohaina
Kua tāruatia ki te papatopenga
r-3\geq -\frac{13}{7}
Whakawehea ngā taha e rua ki te 7. I te mea he tōrunga te 7, kāore e huri te ahunga koreōrite.
r\geq -\frac{13}{7}+3
Me tāpiri te 3 ki ngā taha e rua.
r\geq -\frac{13}{7}+\frac{21}{7}
Me tahuri te 3 ki te hautau \frac{21}{7}.
r\geq \frac{-13+21}{7}
Tā te mea he rite te tauraro o -\frac{13}{7} me \frac{21}{7}, me tāpiri rāua mā te tāpiri i ō raua taurunga.
r\geq \frac{8}{7}
Tāpirihia te -13 ki te 21, ka 8.
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