Whakaoti i te 2/5+x=9/10

$$\frac { 2 } { 5 } + x = \frac { 9 } { 10 }$$

Whakaoti mō x

$$x=\frac{1}{2}=0.5$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Tangohia te \frac{2}{5} mai i ngā taha e rua.

$$x=\frac{9}{10}-\frac{2}{5}$$

Ko te maha noa iti rawa atu o 10 me 5 ko 10. Me tahuri \frac{9}{10} me \frac{2}{5} ki te hautau me te tautūnga 10.

$$x=\frac{9}{10}-\frac{4}{10}$$

Tā te mea he rite te tauraro o \frac{9}{10} me \frac{4}{10}, me tango rāua mā te tango i ō raua taurunga.

$$x=\frac{9-4}{10}$$

Tangohia te 4 i te 9, ka 5.

$$x=\frac{5}{10}$$

Whakahekea te hautanga \frac{5}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 5.

$$x=\frac{1}{2}$$