Whakaoti i te {l}{7.4{(a+3)}=3.2a+43.2}{b=a}{c=b}{text{Solvefor}dtext{where}}{d=c}

$$\left. \begin{array} { l } { 7.4 {(a + 3)} = 3.2 a + 43.2 }\\ { b = a }\\ { c = b }\\ { \text{Solve for } d \text{ where} } \\ { d = c } \end{array} \right.$$

Whakaoti mō a, b, c, d

$$d=5$$

Ngā Upane Otinga

Whakaarohia te whārite tuatahi. Whakamahia te āhuatanga tohatoha hei whakarea te 7.4 ki te a+3.

$$7.4a+22.2=3.2a+43.2$$

Tangohia te 3.2a mai i ngā taha e rua.

$$7.4a+22.2-3.2a=43.2$$

Pahekotia te 7.4a me -3.2a, ka 4.2a.

$$4.2a+22.2=43.2$$

Tangohia te 22.2 mai i ngā taha e rua.

$$4.2a=43.2-22.2$$

Tangohia te 22.2 i te 43.2, ka 21.

$$4.2a=21$$

Whakawehea ngā taha e rua ki te 4.2.

$$a=\frac{21}{4.2}$$

Whakarohaina te \frac{21}{4.2} mā te whakarea i te taurunga me te tauraro ki te 10.

$$a=\frac{210}{42}$$

Whakawehea te 210 ki te 42, kia riro ko 5.

$$a=5$$

Whakaarohia te whārite tuarua. Me kōkuhu ngā uara tāupe mōhiotia ki te whārite.

$$b=5$$

Whakaarohia te whārite tuatoru. Me kōkuhu ngā uara tāupe mōhiotia ki te whārite.

$$c=5$$

Whakaarohia te whārite tuawhā. Me kōkuhu ngā uara tāupe mōhiotia ki te whārite.

$$d=5$$

Kua oti te pūnaha te whakatau.

$$a=5 b=5 c=5 d=5$$