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rezolvati ecuatiile:
111+2x+29=10 la puterea a 3
5x+52-31=30 la puterea a 2-19

5(y-2)+3=38
9+2(14-y)=15

complet ofer 50 puncte si coronita

Răspuns :

Renatemambouko
111+2x+29=10³
2x=1000-111-29
2x=860
x=430

5x+52-31=30²-19
5x+52-31=900-19
5x=881-52+31
5x=860
x=172


5(y-2)+3=38
5y-10=38-3
5y=35+10
5y=45
y=9

9+2(14-y)=15
9+28-2y=15
37-2y=15
2y=37-15
2y=22
y=11




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