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exercitiu incercuit cu rosu

Exercitiu Incercuit Cu Rosu class=

Răspuns :

72-2x=36=>2x=72-36=>2x=36=>x=18
81-3x=27=>3x=81-27=>3x=54=>x=18
3-15x=3=>  3-3=15x=>15x=0=>x=0
51=35x-19=>35x=51+19=>35x=70=>x=2