Question

Sa se rezolve urmatoarele ecuatii
2x+7=3x-2+8
2(1-x)=3(4-7x)
1-2x-2(3-4x)=12

Answer 1

2x+7=3x-2+8 2x-3x=-2+8-7 -x=6-7 -x=-1 x=1 2(1-x)=3(4-7x) 2-2x=12-21x -2x+21x=12-2 19x=10 x=10\19 1-2x-2(3-4x)=12 1-2x-6+8x=12 -2x+8x=12-1+6 6x=5 x=5/6 Sper ca nu am incurcat ceva ...in fine modalitatea e corecta .