Rozwiąż równania: a) 6*(x-2)= -54 b)1/2 (a+4)=6 c)1/4(x-8)= -22 d)(-3)*(x+2)= -12 PILNE PROSZĘ O POMOC !!

a) 6*(x-2)= -54 6x-12=-54 6x=-54+12 6x= -42 / :6 x= -7 b)1/2 (a+4)=6 1/2a+2=6 1/2a=6-2 1/2a=4 / * 2 a=8 c)1/4(x-8)= -22 1/4x-2=-22 1/4x=-22+2 1/4x=-20 / * 4 x=-80 d)(-3)*(x+2)= -12 -3x-6=-12 -3x=-12+6 -3x=-6/*-1 3x=6 / :3 x=2 Licze na naj!

a) 6*(x-2)= -54 6x-12 = -54 6x = -54+12 6x = -42 / :6 x = -7 b)1/2 (a+4)=6 1/2 a + 2 = 6 1/2 a = 6-2 1/2 a = 4 / *2 a = 8 c)1/4(x-8)= -22 1/4 x - 2 = -22 1/4 x = -22+2 1/4 x = -20 / *4 x = - 80 d)(-3)*(x+2)= -12 -3x-6 = -12 -3x = -12+6 -3x = -6 / :(-3) x = 2