Odpowiedź:
11-2x=17
-2x=17-11
-2x=6
x=-3
4x+4=3x-15
4x-3x=-15-4
x=-19
0,12 + 0,2x = 0,3
0,2x=0,3-0,12
0,2x=0,18
x=0,9
d)4x + 2 – 6 – 5x = 6 – 5x + 2
4x-6=6
4x=6+6
4x=12
x=3
e) -8 – (3x – 6) = 3(5 – x) + 2x
-8-3x+6=15-3x+2x
-8+6=15+2x
-2=15+2x
-2x=15+2
-2x=17
x=-17/2
f) (1 + 2x)(x – 6)– 4 = 2 - 2x^2 + 5 + 4x^2
x-6+2x^2-12x-4=7+2x^2
-11x-10+2x^2=7+2x^2
-11x-10=7
-11x=7+10
-11x=17
x=-17/11
