Datrys 510^-220/10002=x98/10005

$$5 { 10 }^{ -2 } \frac{ 20 }{ 1000 } 2 = x \frac{ 98 }{ 1000 } 5$$

Datrys ar gyfer x

$$x=\frac{1}{245}\approx 0.004081633$$

Camau ar gyfer Datrys Hafaliad Llinol

Rhaid i chi ganslo 5 allan ar y ddwy ochr.

$$10^{-2}\times \frac{20}{1000}\times 2=x\times \frac{98}{1000}$$

Cyfrifo 10 i bŵer -2 a chael \frac{1}{100}.

$$\frac{1}{100}\times \frac{20}{1000}\times 2=x\times \frac{98}{1000}$$

Lleihau'r ffracsiwn \frac{20}{1000} i'r graddau lleiaf posib drwy dynnu a chanslo allan 20.

$$\frac{1}{100}\times \frac{1}{50}\times 2=x\times \frac{98}{1000}$$

Lluosi \frac{1}{100} a \frac{1}{50} i gael \frac{1}{5000}.

$$\frac{1}{5000}\times 2=x\times \frac{98}{1000}$$

Lluosi \frac{1}{5000} a 2 i gael \frac{1}{2500}.

$$\frac{1}{2500}=x\times \frac{98}{1000}$$

Lleihau'r ffracsiwn \frac{98}{1000} i'r graddau lleiaf posib drwy dynnu a chanslo allan 2.

$$\frac{1}{2500}=x\times \frac{49}{500}$$

Cyfnewidiwch yr ochrau fel bod yr holl dermau newidiol ar yr ochr chwith.

$$x\times \frac{49}{500}=\frac{1}{2500}$$

Lluoswch y ddwy ochr â \frac{500}{49}, cilyddol \frac{49}{500}.

$$x=\frac{1}{2500}\times \frac{500}{49}$$

Lluosi \frac{1}{2500} a \frac{500}{49} i gael \frac{1}{245}.

$$x=\frac{1}{245}$$