Datrys 2x+2[y-(4x-[z+2y])+z]-2y=

$$2 x + 2 [ y - ( 4 x - [ z + 2 y ] ) + z ] - 2 y =$$

Enrhifo

$$4z+4y-6x$$

Camau Ateb

I ddod o hyd i wrthwyneb z+2y, dewch o hyd i wrthwyneb pob term.

$$2x+2\left(y-\left(4x-z-2y\right)+z\right)-2y$$

I ddod o hyd i wrthwyneb 4x-z-2y, dewch o hyd i wrthwyneb pob term.

$$2x+2\left(y-4x-\left(-z\right)-\left(-2y\right)+z\right)-2y$$

Gwrthwyneb -z yw z.

$$2x+2\left(y-4x+z-\left(-2y\right)+z\right)-2y$$

Gwrthwyneb -2y yw 2y.

$$2x+2\left(y-4x+z+2y+z\right)-2y$$

Cyfuno y a 2y i gael 3y.

$$2x+2\left(3y-4x+z+z\right)-2y$$

Cyfuno z a z i gael 2z.

$$2x+2\left(3y-4x+2z\right)-2y$$

Defnyddio’r briodwedd ddosbarthu i luosi 2 â 3y-4x+2z.

$$2x+6y-8x+4z-2y$$

Cyfuno 2x a -8x i gael -6x.

$$-6x+6y+4z-2y$$

Cyfuno 6y a -2y i gael 4y.

$$-6x+4y+4z$$

Ehangu

$$4z+4y-6x$$

Camau Ateb

I ddod o hyd i wrthwyneb z+2y, dewch o hyd i wrthwyneb pob term.

$$2x+2\left(y-\left(4x-z-2y\right)+z\right)-2y$$

I ddod o hyd i wrthwyneb 4x-z-2y, dewch o hyd i wrthwyneb pob term.

$$2x+2\left(y-4x-\left(-z\right)-\left(-2y\right)+z\right)-2y$$

Gwrthwyneb -z yw z.

$$2x+2\left(y-4x+z-\left(-2y\right)+z\right)-2y$$

Gwrthwyneb -2y yw 2y.

$$2x+2\left(y-4x+z+2y+z\right)-2y$$

Cyfuno y a 2y i gael 3y.

$$2x+2\left(3y-4x+z+z\right)-2y$$

Cyfuno z a z i gael 2z.

$$2x+2\left(3y-4x+2z\right)-2y$$

Defnyddio’r briodwedd ddosbarthu i luosi 2 â 3y-4x+2z.

$$2x+6y-8x+4z-2y$$

Cyfuno 2x a -8x i gael -6x.

$$-6x+6y+4z-2y$$

Cyfuno 6y a -2y i gael 4y.

$$-6x+4y+4z$$