Datrys (3y-9)=3/5(y+5)

$$(3y-9)= \frac{ 3 }{ 5 } (y+5)$$

Datrys ar gyfer y

$$y=5$$

Camau ar gyfer Datrys Hafaliad Llinol

Defnyddio’r briodwedd ddosbarthu i luosi \frac{3}{5} â y+5.

$$3y-9=\frac{3}{5}y+\frac{3}{5}\times 5$$

Canslo 5 a 5.

$$3y-9=\frac{3}{5}y+3$$

Tynnu \frac{3}{5}y o'r ddwy ochr.

$$3y-9-\frac{3}{5}y=3$$

Cyfuno 3y a -\frac{3}{5}y i gael \frac{12}{5}y.

$$\frac{12}{5}y-9=3$$

Ychwanegu 9 at y ddwy ochr.

$$\frac{12}{5}y=3+9$$

Adio 3 a 9 i gael 12.

$$\frac{12}{5}y=12$$

Lluoswch y ddwy ochr â \frac{5}{12}, cilyddol \frac{12}{5}.

$$y=12\times \frac{5}{12}$$

Canslo 12 a 12.

$$y=5$$