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Condrealoredana34
a fost răspuns

cine mă ajută?va rog mult....[(x:3-1):6+489]:25+2=56. (x:6-528)+307=517. [866-(18×12+a)]:4=126​

Răspuns :

Saragabriela833

Răspuns:

..[(×÷3-1)÷6+489]÷25+2=56

[(×÷3-1)÷6+489]÷25=56-2

[(×÷3-1)÷6+489]÷25=54

[×÷3+1)÷6+489]=54×25

[(×÷3+1)÷6+489]=1350

[(×÷3+1)÷6=1350-489

(×÷3-1)÷6=861

(×÷3-1)=861×6

×÷3-1=5166

×÷3=5166+1

×÷3=5167

x=5167×3

x=15501

b) (x÷6-528)+307=517

(×÷6-528)=517-307

(×÷6-528)=210

x÷6=210+528

x÷6=738

x=738×6

x=4428

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