Помогите решить уравнения: 1) 3.5x-2.8=1.4x+1.4 2) 3.6x-2.5=1.2x+2.3
3.5х-2.8=1.4х+1.4 3.5х-1.4х=1.4+2.8 2.1х=4.2 х=4.2:2.1 х=2 3.6х-2.5=1.2х+2.3 3.6х-1.2х=2.3+2.5 2.4х=4.8 х=4.8:2.4 х=2
1) 3.5x-2.8=1.4x+1.4 / *10 35x-28=14x+14 35x-14x=14+28 21x=42 x=2 2) 3.6x-2.5=1.2x+2.3 / *10 36x-25=12x+23 36x-12x=23+25 24x=48 x=2