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2014-11-18T11:05:01+02:00
E) 3x+4=3x+3
 3x-3x=3-4
0=-1 imposibil ecuatia nu are solutie

f) 2x+3=3(x+1)-x 
2x+3=3x+3-x
2x+3=2x+3
solutia are  solutii x∈N


1 5 1
2014-11-18T11:07:12+02:00
E)3x+4=3x+3
4-3=3x-3x
1=0         imposibil
f)2x+3=3(x+1)-x
2x+3=3x+3-x
3x-x-2x=3-3
0x=0
x=N.    orice nr.inmultit cu o egal 0