Whakaoti i te {l}{-3(1+2m)=-3(m+6)}{-7(5-4x)=3(3+2x)}

$$\left. \begin{array} { l } { - 3 ( 1 + 2 m ) = - 3 ( m + 6 ) } \\ { - 7 ( 5 - 4 x ) = 3 ( 3 + 2 x ) } \end{array} \right.$$

Whakaoti mō m, x

$$x=2$$

$$m=5$$

Ngā Upane Otinga

Whakaarohia te whārite tuatahi. Me whakakore te -3 ki ngā taha e rua.

$$1+2m=m+6$$

Tangohia te m mai i ngā taha e rua.

$$1+2m-m=6$$

Pahekotia te 2m me -m, ka m.

$$1+m=6$$

Tangohia te 1 mai i ngā taha e rua.

$$m=6-1$$

Tangohia te 1 i te 6, ka 5.

$$m=5$$

Whakaarohia te whārite tuarua. Whakamahia te āhuatanga tohatoha hei whakarea te -7 ki te 5-4x.

$$-35+28x=3\left(3+2x\right)$$

Whakamahia te āhuatanga tohatoha hei whakarea te 3 ki te 3+2x.

$$-35+28x=9+6x$$

Tangohia te 6x mai i ngā taha e rua.

$$-35+28x-6x=9$$

Pahekotia te 28x me -6x, ka 22x.

$$-35+22x=9$$

Me tāpiri te 35 ki ngā taha e rua.

$$22x=9+35$$

Tāpirihia te 9 ki te 35, ka 44.

$$22x=44$$

Whakawehea ngā taha e rua ki te 22.

$$x=\frac{44}{22}$$

Whakawehea te 44 ki te 22, kia riro ko 2.

$$x=2$$

Kua oti te pūnaha te whakatau.

$$m=5 x=2$$