Datrys 5*(-0.2)-(-4/5)=6

$$5 \cdot ( - 0.2 ) - ( - \frac { 4 } { 5 } ) = 6$$

Gwireddu

Camau Ateb

Lluosi 5 a -0.2 i gael -1.

$$-1-\left(-\frac{4}{5}\right)=6$$

Gwrthwyneb -\frac{4}{5} yw \frac{4}{5}.

$$-1+\frac{4}{5}=6$$

Troswch y rhif degol -1 i’r ffracsiwn -\frac{5}{5}.

$$-\frac{5}{5}+\frac{4}{5}=6$$

Gan fod gan -\frac{5}{5} a \frac{4}{5} yr un dynodydd, adiwch nhw drwy adio eu rhifiaduron.

$$\frac{-5+4}{5}=6$$

Adio -5 a 4 i gael -1.

$$-\frac{1}{5}=6$$

Troswch y rhif degol 6 i’r ffracsiwn \frac{30}{5}.

$$-\frac{1}{5}=\frac{30}{5}$$

Cymharu -\frac{1}{5} gyda \frac{30}{5}.

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