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[5 • (5x-5) - 120] • 5 - 25=125
URGENT!


Răspuns :

5X(5X-5)-120]X5 -25=125
125+25=150:5=30+120=150:5=30+5=35     
5X=35
X=35:5=7
X=7

5*(5x-5)-120=(125+25):5

5*(5x-5)-120=150:5

5*(5x-5)-120=30

5*(5x-5)=150

5x-5=150:5

5x-5=30

5x=35

x=35:5

x=7