Datrys 66/11-42=

$$6 \frac { 6 } { 11 } - 42 =$$

Enrhifo

$$-\frac{390}{11}\approx -35.454545455$$

Camau Ateb

Lluosi 6 a 11 i gael 66.

$$\frac{66+6}{11}-42$$

Adio 66 a 6 i gael 72.

$$\frac{72}{11}-42$$

Troswch y rhif degol 42 i’r ffracsiwn \frac{462}{11}.

$$\frac{72}{11}-\frac{462}{11}$$

Gan fod gan \frac{72}{11} a \frac{462}{11} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.

$$\frac{72-462}{11}$$

Tynnu 462 o 72 i gael -390.

$$-\frac{390}{11}$$

Ffactor

$$-\frac{390}{11} = -35\frac{5}{11} = -35.45454545454545$$