Issolvi (12x+3y)-(12x-20y)=15-81

$$( 12 x + 3 y ) - ( 12 x - 20 y ) = 15 - 81$$

Solvi għal y

$$y = -\frac{66}{23} = -2\frac{20}{23} = -2.869565217391304$$

Passi biex Issolvi l-Ekwazzjoni Lineari

Biex issib l-oppost ta' 12x-20y, sib l-oppost ta' kull terminu.

$$12x+3y-12x+20y=15-81$$

Ikkombina 12x u -12x biex tikseb 0.

$$3y+20y=15-81$$

Ikkombina 3y u 20y biex tikseb 23y.

$$23y=15-81$$

Naqqas 81 minn 15 biex tikseb -66.

$$23y=-66$$

Iddividi ż-żewġ naħat b'23.

$$y=\frac{-66}{23}$$

Frazzjoni \frac{-66}{23} tista' tinkiteb mill-ġdid bħala -\frac{66}{23} bl-estrazzjoni tas-sinjal negattiv.

$$y=-\frac{66}{23}$$

Solvi għal x (complex solution)

$$x\in \mathrm{C}$$

$$y = -\frac{66}{23} = -2\frac{20}{23} = -2.869565217391304$$

Solvi għal x

$$x\in \mathrm{R}$$

$$y = -\frac{66}{23} = -2\frac{20}{23} = -2.869565217391304$$