Question

Rezolvati ecuatiile in multimea N:
a)x+205=407;
b)x-30=401;
c)3x=408
d)4x=305;
e)2x-3=5;
f)3x+6=2x+8;
g)400/x=20;
h)x/2=47

Answer 1

a.x=202
b.x=371
c.x=106
d.x=76.25
e.x=4
f.x=2
g.x=20
h.x=94

Answer 2

a) x=407-205
x=202
b) x=401+30
x=431
c) x=408:3
x=136
d) x=305:4
x=76,25
e) 2x=5+3=8
x=4
f) 3x-2x=8-6
x=2
g) x=400:20
x=20
h) x=47×2
x=94