Помогите пожалуйста ! Реши уравнения. 1) 5x - 1 = 9 2) 4 + 2x = -6 3) -7x - 2= 12 4) x/3=2 5) 1/2x= -3,5 6) 2x : 3 = 4 7) 4/x = 2 8) x/3 - 2 = 3 9) 2x/5 = 10

1) 5x - 1 = 9 5x=9+15x=10x=10:5x=2========== 2) 4 + 2x = -62x=-6-42x=2x=2:2x=1========= 3) -7x - 2= 12-7x=12+2-7x=14x=14:(-7)x=-2============ 4) x/3=2x=2*3x=6========= 5) 1/2x= -3,5x=-35/10*2/1x=-7=========== 6) 2x : 3 = 42x=4*32x=12x=12:2x=6=========== 7) 4/x = 2x=4:2x=2=========== 8) x/3 - 2 = 3x/3=3+2x/3=5x=5*3x=15========== 9) 2x/5 = 10 2x=10*52x=50x=50:2x=25