Odpowiedź:
a) 7x-4=8-2x
9x = 12
x= 12/9 = 1 1/3
b) -3x+4=5x+7
-8x=3
x= - 3/8
c)2(3x-1)-5=8x+3
6x-2-5=8x+3
-2x=10
x=-5
d)1/2(6x+4)+4=7x-15
3x+2+4=7x-15
-4x=-21
x= 21/4 = 5 1/4
e) -2x+3=4(2x-3)+1
-2x+3=8x-12+1
-10x=-14
x=14/10 = 1 2/5
f) -5x+2(3x-1)=7x+4
-5x+6x-2=7x+4
-6x=6
x= -1
