a)2+4x=11-2x b)1-5x=5x-4 c)7-0,5x=9 d)4(x+1)-x=-5 ROZWIĄŻ I SPRAWDŹ

a)2+4x=11-2x 4x + 2x = 11 - 2 6x = 9 x = 9/6 x = 3/2 = 1 1/2 b)1-5x=5x-4 -5x - 5x = -1 + -4 -10x = -5 x = -5/-10 x = 1/5 c)7-0,5x=9 -0,5x = 7 - 9 -0,5x = -2 x = -2/-0,5 x = 4 d)4(x+1)-x=-5 4x + 4 - 1x = -5 4x - 1x = -5 - 4 3x = - 9 x = -9/3 x = - 3

a) 2+4x=11-2x 6x=9 x= 1.5 spr. 2+4*1.5=11-2*1.5 2+6 =11-3 8 = 8 b) 1-5x= 5x-4 -5x=5x-5 -10x=-5 x=0.5 spr. 1-5*0.5=5*0.5-4 1-2.5=2.5-4 -1.5= - 1.5 c) 7-0.5x=9 -0.5x= 2 x=-4 spr. 7-0.5*-4=9 7+2=9 9=9 d) 4(x+1)-x=-5 4x+4-x=-5 3x+4=-5 3x=-9 x= -3 spr. 4(-3+1)+3=-5 -12+4+3=-5 -5=-5