Question

Rezolvati in multimea Z ecuatia:
1.
x + 7 = 3
16 - x = -4
6 - x =15
11 - x =14
-2 - x = -5
-x + 4 = -9
2.
|x| + 3 = 8
15 - |x|= 9
|x|- 3 = 4
|x + 3| = 1
|x| - 6 = -8
|x - 7| = 10

Answer 1

1. a)×=-4
b)x=20
c)x=-21
d)x=-3
e)x=3
f)x=13

2.a)x=5;-5
b)x=6;-6
c)x=7;-7
d)x=-4;-2
e)x=14;-2
f)×=17;-3