Whakaoti mō x
x=-\frac{1}{20}=-0.05
Graph
Tohaina
Kua tāruatia ki te papatopenga
\frac{1}{4}+x=\frac{1}{5}
Whakahekea te hautanga \frac{2}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.
x=\frac{1}{5}-\frac{1}{4}
Tangohia te \frac{1}{4} mai i ngā taha e rua.
x=\frac{4}{20}-\frac{5}{20}
Ko te maha noa iti rawa atu o 5 me 4 ko 20. Me tahuri \frac{1}{5} me \frac{1}{4} ki te hautau me te tautūnga 20.
x=\frac{4-5}{20}
Tā te mea he rite te tauraro o \frac{4}{20} me \frac{5}{20}, me tango rāua mā te tango i ō raua taurunga.
x=-\frac{1}{20}
Tangohia te 5 i te 4, ka -1.
Ngā Tauira
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