Question

Rezolvati urmatoarele ecuatii,unde x este numar natural.
a)3(2x-4)=18
b)(6(3x+1)=42
c)5(4x-6)=30
d)4(7x-2)=76
e) 46=(8x-9)2
f)119=(5+6x)7





Ajutati-maa va rog frumos!!! :((

Answer 1

a) 3(2x-4)=18
6x-12=18
6x=18+12
6x=30
x=30:6
x=5

b)6(3x+1)=42
18x+6=42
18x=42-6
18x=36
x=36:18
x=2

c)5(4x-6)=30
20x-30=30
20x=30+30
20x=60
x=60:2
x=3

d)4(7x-2)=76
28x-2=76
28x=76+8
28x=84
x=84:28
x=3

e)46=(8x-9)2
46=16x-18
16x=46+18
16x=64
x=64:16
x=4

f)119=(5+6x)7
119=35+42x
42x=119-35
42x=84
x=84:42x
x=2

Cam atat