Datrys 0.4*x+0.8/0.5=0.3x-0.4/0.4+1

$$\frac { 0.4 \times x + 0.8 } { 0.5 } = \frac { 0.3 x - 0.4 } { 0.4 } + 1$$

Datrys ar gyfer x

$$x=-32$$

Camau ar gyfer Datrys Hafaliad Llinol

Rhannu pob term 0.4x+0.8 â 0.5 i gael \frac{0.4x}{0.5}+\frac{0.8}{0.5}.

$$\frac{0.4x}{0.5}+\frac{0.8}{0.5}=\frac{0.3x-0.4}{0.4}+1$$

Rhannu 0.4x â 0.5 i gael 0.8x.

$$0.8x+\frac{0.8}{0.5}=\frac{0.3x-0.4}{0.4}+1$$

Ehangu \frac{0.8}{0.5} drwy luosi'r rhifiadur a'r enwadur gyda 10.

$$0.8x+\frac{8}{5}=\frac{0.3x-0.4}{0.4}+1$$

Rhannu pob term 0.3x-0.4 â 0.4 i gael \frac{0.3x}{0.4}+\frac{-0.4}{0.4}.

$$0.8x+\frac{8}{5}=\frac{0.3x}{0.4}+\frac{-0.4}{0.4}+1$$

Rhannu 0.3x â 0.4 i gael 0.75x.

$$0.8x+\frac{8}{5}=0.75x+\frac{-0.4}{0.4}+1$$

Rhannu -0.4 â 0.4 i gael -1.

$$0.8x+\frac{8}{5}=0.75x-1+1$$

Adio -1 a 1 i gael 0.

$$0.8x+\frac{8}{5}=0.75x$$

Tynnu 0.75x o'r ddwy ochr.

$$0.8x+\frac{8}{5}-0.75x=0$$

Cyfuno 0.8x a -0.75x i gael 0.05x.

$$0.05x+\frac{8}{5}=0$$

Tynnu \frac{8}{5} o'r ddwy ochr. Mae tynnu unrhyw beth o sero’n rhoi negydd y swm.

$$0.05x=-\frac{8}{5}$$

Rhannu’r ddwy ochr â 0.05.

$$x=\frac{-\frac{8}{5}}{0.05}$$

Mynegwch \frac{-\frac{8}{5}}{0.05} fel ffracsiwn unigol.

$$x=\frac{-8}{5\times 0.05}$$

Lluosi 5 a 0.05 i gael 0.25.

$$x=\frac{-8}{0.25}$$

Ehangu \frac{-8}{0.25} drwy luosi'r rhifiadur a'r enwadur gyda 100.

$$x=\frac{-800}{25}$$

Rhannu -800 â 25 i gael -32.

$$x=-32$$