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Iliusuper
a fost răspuns

Rezolvati in lR ecuatiile:a.l4x-5l=1;b.3(2-x)=5(x-1)-7 (5-x)-2x-3
c. (5x+1)la puterea 2 +(12x-5 ) la puterea 2=(13x1) la puterea 2 +1

Răspuns :

CosmoteRo
4x-5=1
4x=1+5
4x=6
x=6:4=1,5

6-3x=5x-5-35+7x-2x-3
6-3x=10x-43
6+43=10x+3x
49=13x
x=3,769




(5x+1)la 2+(12x-5)la 2=(13x1)la 2+1
25xla2+10x+1+144 x la 2 -120 x +25=170
169 x la 2 -110 x +26=170

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