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d) 2*[3(2x-5)+x-3]+16=18+3*[2*(5x-4)+3(x+4)]

Dau coroana


Răspuns :

      2*(6x-15+x-3)+16=18+3*(10x-8+3x+12) <=>
<=>14x-36+16=18+39x+12<=>
<=>-25x=50 => x=-2