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a fost răspuns

3×x=9012 4x-1=571
3×(x-2)+2=125

Răspuns :

Cocirmariadenis

3 x = 9012

x = 9012 : 3

x = 3004

Verific:  3 × 3 004 = 9 012

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4 x - 1 = 571

4 x = 571 + 1

4 x = 572

x = 572 : 4

x = 143

4 × 143 - 1 = 572 - 1 = 571

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3 ( x - 2 ) + 2 = 125

3 x - 6 + 2 = 125

3 x - 4 = 125

3 x = 125 + 4 = 129

x = 129 : 3

x = 43

Verific:   3 × ( 43 - 2 ) + 2 = 3 × 41 + 2 = 123 + 2 = 125

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