Odpowiedź:
a) (x+26) × 3 = 3x + 78
( 3x+78 ) × (-1) = -3x -78
b) (6a-2) : 2 = 3a -1
(3a-1) × (-1) = -3a+1
a)
x+3*26 = 0
x+78 = 0 // - 78
x = -78
Czyli (-1)
x-1*3*26 = 0
x-3*26 = 0
x-78 = 0 // + 78
x = 78
b)
a=x
6*x-(2/2) = 0
6*x-1 = 0
6*x-1 = 0 // + 1
6*x = 1 // : 6
x = 1/6
6*x-(-1*(2/2)) = 0
6*x+2/2 = 0
6*x+1 = 0 // - 1
6*x = -1 // : 6
x = -1/6
