решите уравнение -8(3+х)+х=4
7(-5+3х)+4х=9
6-2х=3х-10
4х+10=-10

7(-5+3x)+4x=9-35+21x+4x=9-35+25x=925x=44x=44/25x=1,76

-8(3+x)+x=4; -24-8x+x=4; -24-7x=4; -7x=-28; x=47(-5+3x)+4x=9; -35+21x+4x=9; -35+25x=9; 25x=44; x=1,766-2x=3x-10; -2x-3x=-6-10; -5x=-16; x=3,24x+10=-10; 4x=-10-10; 4x=-20; x=-5