1)2x-3=0; 2x=3; x=3/2; x=1,5
2) 3x+6=0; 3x=-6; x=-6/3; x=-2
3) 2,8-0,4x; -0,4x=-2,8|:-1; 0,4x=2,8|*10; 4x=28; x=28/4; x=7
Ответ: -2; 1,5; 7
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1)2x-3=0; 2x=3; x=3/2; x=1,5
2) 3x+6=0; 3x=-6; x=-6/3; x=-2
3) 2,8-0,4x; -0,4x=-2,8|:-1; 0,4x=2,8|*10; 4x=28; x=28/4; x=7
Ответ: -2; 1,5; 7