Issolvi {l}{-15+10+7-8=-6quad-33}{42+(-5)-(-39)+4=(42+-5)(39+4)}

$$\left. \begin{array} { l } { - 15 + 10 + 7 - 8 = - 6 \quad - 33 } \\ { 42 + ( - 5 ) - ( - 39 ) + 4 = ( 42 + - 5 ) ( 39 + 4 ) } \end{array} \right.$$

Ivverifika

Passi tas-Soluzzjonijiet

Żid -15 u 10 biex tikseb -5.

$$-5+7-8=-6-33\text{ and }42-5-\left(-39\right)+4=\left(42-5\right)\left(39+4\right)$$

Żid -5 u 7 biex tikseb 2.

$$2-8=-6-33\text{ and }42-5-\left(-39\right)+4=\left(42-5\right)\left(39+4\right)$$

Naqqas 8 minn 2 biex tikseb -6.

$$-6=-6-33\text{ and }42-5-\left(-39\right)+4=\left(42-5\right)\left(39+4\right)$$

Naqqas 33 minn -6 biex tikseb -39.

$$-6=-39\text{ and }42-5-\left(-39\right)+4=\left(42-5\right)\left(39+4\right)$$

Qabbel -6 u -39.

$$\text{false}\text{ and }42-5-\left(-39\right)+4=\left(42-5\right)\left(39+4\right)$$

Naqqas 5 minn 42 biex tikseb 37.

$$\text{false}\text{ and }37-\left(-39\right)+4=\left(42-5\right)\left(39+4\right)$$

L-oppost ta' -39 huwa 39.

$$\text{false}\text{ and }37+39+4=\left(42-5\right)\left(39+4\right)$$

Żid 37 u 39 biex tikseb 76.

$$\text{false}\text{ and }76+4=\left(42-5\right)\left(39+4\right)$$

Żid 76 u 4 biex tikseb 80.

$$\text{false}\text{ and }80=\left(42-5\right)\left(39+4\right)$$

Naqqas 5 minn 42 biex tikseb 37.

$$\text{false}\text{ and }80=37\left(39+4\right)$$

Żid 39 u 4 biex tikseb 43.

$$\text{false}\text{ and }80=37\times 43$$

Immultiplika 37 u 43 biex tikseb 1591.

$$\text{false}\text{ and }80=1591$$

Qabbel 80 u 1591.

$$\text{false}\text{ and }\text{false}$$

Il-conjunction ta' \text{false} u \text{false} hija \text{false}.

$$\text{false}$$