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[5x(5a-5)-120]x5-25=125
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Răspuns :

Andreabadea21

Răspuns:

[5×(5a-5)-120]×5=125+25

[5×(5a-5)-120]×5=150

(5a-5)-120×5=150÷5

(5a-5)-120×5=30

(5a-5)-120=30×5

(5a-5)-120=150

5a-5=150-120

5a-5=130

5a=130-5

5a=125

a=125÷5

a=25

Stanescuandreea06

a=151

[5×(5a-5)-120]×5-25=125

[5×(5a-5)-120]×5=125+25

5×(5a-5)-120=150:5

5×(5a-5)=30+120

5a-5=750

5a=750+5

5a=755

a=755:5

a=151

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