Rezolvati in R,urmatoarele ecuatii
1) 5x+3=8;6x-9=45;3x+3=6;144x+12=156;83=12x-1


Răspuns :

5x+3=8
5x=5
X=1
P:5×1+3=8

6x-9=45
6x=54
x=9
P=6*9-9=45

3x+3=6
3x=3
x=1
P:3*1+3=6

144x+12=156
144x=156-12=>144x=144=>x=1
P:144*1+12=156
83=12x-1=>84=12x=>x=84:12=>x=7
83=12*7-1