Question

Rezolva in multimea Z ecuatiile dau 20 de puncte!

Answer 1

Răspuns:

Explicație pas cu pas:

a) 17 + x = 1  => x = 1-17 => x = -16

b) x + 39 = 0 => x = -39

c) - x - 7 = 0 => x = -7

d) - x + 12 = -1 => x = 12+1 => x = 13

e) x - 43 = 11 => x = 11+43 => x = 54

f) 12 - x = 5 => x = 12-5 => x = 7

g) -13 + x = -1 => x = -1+13 => x = 12

h) -x + 2 + 3x = 2 => 2x = 2-2 => 2x = 0 => x = 0

i) 6+5x = 2x+18 => 5x-2x = 18-6 => 3x = 12 => x = 12:3 => x = 4

j) -4-3x = x+8 => x +3x = -4-8 => 4x = -12 => x = -12:4 => x = -3

k) -(-x-3)+2 = 10 => x+3+2 = 10 => x = 10-5 => x = 5

l) 3-(4-x) = 1 => 3-4+x = 1 => x = 1+1 => x = 2

Toate solutiile apartin multimii numerelor intregi (Z)

#copaceibrainly