Răspuns :
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
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
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
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