А) 0,8х + 14 = 2 – 1,6х; б) 2 – 3(х + 2) = 5 – 2х;

[latex]a)0.8*x + 14 = 2 - 1.6*x\ |*5[/latex] [latex]4x+70 = 10 - 8x[/latex] [latex]12*x = -60[/latex] [latex]x = -5[/latex] [latex]b)2-3*(x+2) = 5 -2*x[/latex] [latex]2-3*x-6 = 5 -2*x[/latex] [latex]2-x-6 = 5[/latex] [latex]x =2-6-5[/latex] [latex]x = -9[/latex]

а)0,8х+14=2-1,6х 0,8х+14-2+1,6х=0 2,4х+12=0 2,4х=-12 х=-5 ответ:-5 б)2-3(х+2)=5-2х 2-3х-6=5-2х -3х-4=5-2х -3х+2х=5+4 -х=9 х=-9 ответ: -9