Whakaoti i te 3/4+2/5x=9/10

$$\frac { 3 } { 4 } + \frac { 2 } { 5 } x = \frac { 9 } { 10 }$$

Whakaoti mō x

$$x=\frac{3}{8}=0.375$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Tangohia te \frac{3}{4} mai i ngā taha e rua.

$$\frac{2}{5}x=\frac{9}{10}-\frac{3}{4}$$

Ko te maha noa iti rawa atu o 10 me 4 ko 20. Me tahuri \frac{9}{10} me \frac{3}{4} ki te hautau me te tautūnga 20.

$$\frac{2}{5}x=\frac{18}{20}-\frac{15}{20}$$

Tā te mea he rite te tauraro o \frac{18}{20} me \frac{15}{20}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{2}{5}x=\frac{18-15}{20}$$

Tangohia te 15 i te 18, ka 3.

$$\frac{2}{5}x=\frac{3}{20}$$

Me whakarea ngā taha e rua ki te \frac{5}{2}, te tau utu o \frac{2}{5}.

$$x=\frac{3}{20}\times \frac{5}{2}$$

Me whakarea te \frac{3}{20} ki te \frac{5}{2} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$x=\frac{3\times 5}{20\times 2}$$

Mahia ngā whakarea i roto i te hautanga \frac{3\times 5}{20\times 2}.

$$x=\frac{15}{40}$$

Whakahekea te hautanga \frac{15}{40} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 5.

$$x=\frac{3}{8}$$