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realizati ecuatia 5x+1+5x+1-5x=145

Răspuns :

5x+1+5x+1-5x=145
5x+2=145
5x=143
x=143:5
x=28,6
5x+1+5x+1-5x=145
5x+2=145
5x=145-2
5x=143
x=143:5
x=28,6

Verificare:
143+1+143+1-143=143+2=145