ROZWIAZ ROWNANIA PILNE!!!!!! a)7x-18x+3x-10=2x-4 b)3x-2*(x+1)=3+3x c)x-3+3x+30=x+6 d)2*(x+2)-2=4*(x-1)+5
ROZWIAZ ROWNANIA PILNE!!!!!!
a)7x-18x+3x-10=2x-4
b)3x-2*(x+1)=3+3x
c)x-3+3x+30=x+6
d)2*(x+2)-2=4*(x-1)+5
7x -18x +3x -10 = 2x -4 7x - 18x + 3x - 2x = -4 + 10 -10x = 6 /:(-10) x = - 6/10 x = -3/5 b) 3x -2 (x+1) = 3 + 3x 3x -2x -2 = 3 +3x 3x -2x -3x = 3 + 2 -2x = 5 :( -2) x = -5/2 x = - 2 i1/2 c) x -3 +3x +30 = x + 6 x +3x - x = 6 + 3 - 30 3x = -21 /: 3 x = -7 d) 2*(x+2) -2 = 4*(x-1)+5 2x +4 -2 = 4x -4 +5 2x -4x = -4 +5 -4 +2 -2x = -1 /:(-2) x = 1/2