Whakaoti mō y
y\geq -\frac{11}{20}
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Tohaina
Kua tāruatia ki te papatopenga
y\geq \frac{1}{5}-\frac{3}{4}
Tangohia te \frac{3}{4} mai i ngā taha e rua.
y\geq \frac{4}{20}-\frac{15}{20}
Ko te maha noa iti rawa atu o 5 me 4 ko 20. Me tahuri \frac{1}{5} me \frac{3}{4} ki te hautau me te tautūnga 20.
y\geq \frac{4-15}{20}
Tā te mea he rite te tauraro o \frac{4}{20} me \frac{15}{20}, me tango rāua mā te tango i ō raua taurunga.
y\geq -\frac{11}{20}
Tangohia te 15 i te 4, ka -11.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
whārite Simultaneous
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Whakarerekētanga
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Ngā Tepe
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