Datrys 800+(200+5000)(4-x)-2*(200-50x)=1250

$$800 + ( 200 + 5000 ) ( 4 - x ) - 2 \times ( 200 - 50 x ) = 1250$$

Datrys ar gyfer x

$$x = \frac{133}{34} = 3\frac{31}{34} \approx 3.911764706$$

Camau ar gyfer Datrys Hafaliad Llinol

Adio 200 a 5000 i gael 5200.

$$800+5200\left(4-x\right)-2\left(200-50x\right)=1250$$

Defnyddio’r briodwedd ddosbarthu i luosi 5200 â 4-x.

$$800+20800-5200x-2\left(200-50x\right)=1250$$

Adio 800 a 20800 i gael 21600.

$$21600-5200x-2\left(200-50x\right)=1250$$

Defnyddio’r briodwedd ddosbarthu i luosi -2 â 200-50x.

$$21600-5200x-400+100x=1250$$

Tynnu 400 o 21600 i gael 21200.

$$21200-5200x+100x=1250$$

Cyfuno -5200x a 100x i gael -5100x.

$$21200-5100x=1250$$

Tynnu 21200 o'r ddwy ochr.

$$-5100x=1250-21200$$

Tynnu 21200 o 1250 i gael -19950.

$$-5100x=-19950$$

Rhannu’r ddwy ochr â -5100.

$$x=\frac{-19950}{-5100}$$

Lleihau'r ffracsiwn \frac{-19950}{-5100} i'r graddau lleiaf posib drwy dynnu a chanslo allan -150.

$$x=\frac{133}{34}$$