14-3x+2(x -1)=5(3x+2) решите уравнение
-5(0,4x+0,3x)+2(0,7x-0,1)=3(x-0,4)-x найдите корень уравнения
Решите уравнение, используя основное свойство пропорции: x+8/15=3x-1/21. Решите уравнение: |x+3|=1/2

14-3x+2(x-1) = 5(3x+2)14-3x +2x-2=15x+1012-x= 15x+10-x-15x= 10-12-16x=-2x= (-2) / (-16) =2/16 = 1/8x= 0.125---------------------------------------14 - 3 *0.125 +2(0.125-1)= 5(3*0.125+2)14-0.375+ 2*  (-0.875) = 5 (0.375+2)14-0.375 +(-1.75) = 5*2.37511.875=11.875- 5(0.4x+0.3x) +2(0.7x-0.1) = 3(x-0.4)-x-5 *0.7x  +  1.4x -0.2 = 3x-1.2 -x-3,5x +1.4x-0.2 = 2x-1.2-2,1x -2x = -1.2+0.2-4.1x= -1x= (-1)/ (-4,1) = 10/41x= 10/41(х+8)/15 = (3х-1)/2121(х+8) = 15(3х-1)21х +168 = 45х -1521х-45х= -15-168-24х= -183х= -183 /(-24) = 61/8х=7,625-------------------------------(7,625+8)/15 = (3*7,625-1)/2115,625/15 = 21,875/213,125/3 = 3,125/33125/1000   *1/3 =  3125/1000 *1/3125/40  *1/3 = 125/40  *1/325/8  * 1/3= 25/8 * 1/31   1/24  =  1   1 /24|x+3|= 1/2 |x+3| ≥0x∈(-3; ∞)х+3 - 1/2 =0х+2,5=0х₁=-2,5х+3<0x∈(-∞;-3)-x -3 -1/2 = 0-х- 3,5=0-х=3,5х₂=-3,5