Datrys 5*1.42-5(2*1.42+1)=-3(4*1.42+5)

$$5 \times 1.42-5(2 \times 1.42+1)=-3(4 \times 1.42+5)$$

Gwireddu

Camau Ateb

Lluosi 5 a 1.42 i gael 7.1.

$$7.1-5\left(2\times 1.42+1\right)=-3\left(4\times 1.42+5\right)$$

Lluosi 2 a 1.42 i gael 2.84.

$$7.1-5\left(2.84+1\right)=-3\left(4\times 1.42+5\right)$$

Adio 2.84 a 1 i gael 3.84.

$$7.1-5\times 3.84=-3\left(4\times 1.42+5\right)$$

Lluosi 5 a 3.84 i gael 19.2.

$$7.1-19.2=-3\left(4\times 1.42+5\right)$$

Tynnu 19.2 o 7.1 i gael -12.1.

$$-12.1=-3\left(4\times 1.42+5\right)$$

Lluosi 4 a 1.42 i gael 5.68.

$$-12.1=-3\left(5.68+5\right)$$

Adio 5.68 a 5 i gael 10.68.

$$-12.1=-3\times 10.68$$

Lluosi -3 a 10.68 i gael -32.04.

$$-12.1=-32.04$$

Cymharu -12.1 gyda -32.04.

$$\text{false}$$