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testul 1.
aducem la acelasi numitor=> -12x+18(x-3)+3x-3=2x+2-x-3<=> -12x+18x-54+3x-3=x-1<=> 9x-x=57-1<=> 8x=57<=> x=7
inlocuim pa x in a doua ecuatie=> 7m-3+4=2(m-7)+5<=> 7m+11=2m-14+5<=> 5m=-15+5-11<=> 5m=-25+5<=> 5m=-20<=> m=-4
