Datrys 75,000=x*(1+0.1)^21

$$75,000 = x \cdot ( 1 + 0.1 ) ^ { 21 }$$

Datrys ar gyfer x

$$x = \frac{75000000000000000000000000}{7400249944258160101211} = 10134\frac{5.867064887799519 \times 10^{21}}{7.40024994425816 \times 10^{21}} \approx 10134.792819828$$

Camau ar gyfer Datrys Hafaliad Llinol

Adio 1 a 0.1 i gael 1.1.

$$75000=x\times 1.1^{21}$$

Cyfrifo 1.1 i bŵer 21 a chael 7.400249944258160101211.

$$75000=x\times 7.400249944258160101211$$

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

$$x\times 7.400249944258160101211=75000$$

Rhannu’r ddwy ochr â 7.400249944258160101211.

$$x=\frac{75000}{7.400249944258160101211}$$

Ehangu \frac{75000}{7.400249944258160101211} drwy luosi'r rhifiadur a'r enwadur gyda 1000000000000000000000.

$$x=\frac{75000000000000000000000000}{7400249944258160101211}$$