1.Rozwiąż rówania; a).-3x=2x-10 b).2x-2=7-x c).10=4-2x d).-(2x-1)=4 e).2(x+1)=x matematyka 1. Zadanie.2 str.176 1 gimnazjum. ^^

a)-3x-2x=-10 -5x=-10 x=2 b)2x-2=7-x 3x=9 x=3 c)10=4-2x 6=-2x x=-3 d)-(2x-1)=4 -2x+1=4 -2x=3 x=-1.5 e)2(x+1)=x 2x+2=x x=-2

a) -3x = 2x - 10|-2x -5x = -10|:5 -x = -2|* (-1) x = 2 b) 2x - 2 = 7 - x|+ x 3x - 2 = 7|+2 3x = 9|:3 x = 3 c) 10 = 4 - 2x|+2x 2x + 10 = 4|-10 2x = -6|2 x = -3 d) -(2x - 1) = 4 -2x + 1 = 4|-1 -2x = 3|:2 -x = 3/2|* (-1) x = -3/2 x = -1(i) 1/2 e) 2(x + 1) = x 2*x + 2*1 = x 2x + 2 = x|- 2x 2 = -x|* (-1) -2 = x