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3[2(x+4)-3(x-5)]=4[3(x+2)-4(x+1)]+15

Răspuns :

3( 2x+8-3x+15)=4(3x+6-4x-4)+15=

6x+24-9x+45 = 12x +24-16x-16+15

6x-9x-12x+16x =24-16+15 -24 -45

x= - 46