Issolvi 100(0.80+0.25(70))=100(0.70(x+70))

$$100(0.80+0.25(70))=100(0.70(x+70))$$

Solvi għal x

$$x = -\frac{307}{7} = -43\frac{6}{7} \approx -43.857142857$$

Passi biex Issolvi l-Ekwazzjoni Lineari

Annulla 100 fuq iż-żewġ naħat.

$$0.8+0.25\times 70=0.7\left(x+70\right)$$

Immultiplika 0.25 u 70 biex tikseb 17.5.

$$0.8+17.5=0.7\left(x+70\right)$$

Żid 0.8 u 17.5 biex tikseb 18.3.

$$18.3=0.7\left(x+70\right)$$

Uża l-propjetà distributtiva biex timmultiplika 0.7 b'x+70.

$$18.3=0.7x+49$$

Ibdel in-naħat sabiex it-termini varjabbli kollha jkunu fuq in-naħa tax-xellug.

$$0.7x+49=18.3$$

Naqqas 49 miż-żewġ naħat.

$$0.7x=18.3-49$$

Naqqas 49 minn 18.3 biex tikseb -30.7.

$$0.7x=-30.7$$

Iddividi ż-żewġ naħat b'0.7.

$$x=\frac{-30.7}{0.7}$$

Espandi \frac{-30.7}{0.7} billi timmultiplika kemm in-numeratur kif ukoll id-denominatur b'10.

$$x=\frac{-307}{7}$$

Frazzjoni \frac{-307}{7} tista' tinkiteb mill-ġdid bħala -\frac{307}{7} bl-estrazzjoni tas-sinjal negattiv.

$$x=-\frac{307}{7}$$