Odpowiedź:
a)
2x + 1 = 4
2x = 4 - 1
2x = 3 /: 2
x = 3/2
x = 1 i 1/2
b)
x + 8 = 6x + 5
x - 6x = 5 - 8
-5x = -3 /: (-5)
x = 3/5
2x+1=4 |-1
2x=4-1
2x=3 |:2
x=1,5
x+8=6x+5
x-6x=5-8
-7x=-3 |*(-1)
7x=3 |:7
x= 3/7
