Question

Rezolvati in |N ecuatile a)8x=16 b)8x-4=0 c)10-x=2 d)13x-9=4 e)3(x+5)=15 f)4x+5=3(x+1)+7 g)8x+2=3(x+1)+4x

Answer 1

a)8x=16=>x=16:8=>x=2
b)8x-4=0=>8x=0+4=>8x=4=>x=4:8 NU APARTINE |N
c)10-x=2=>x=10-2=>x=8
d)13x-9=4=>13x=9+4=>13x=13=>x=13:13=>x=1
e)3(x+5)=15=>x+5=15:3=>x+5=5=>x=5-5=>x=0
f)4x+5=3(x+1)+7=>4x+5=3x+3+7=>4x-3x=3+7-5=>x=5
g)8x+2=3(x+1)+4x=>8x+2=3x+3+4x=>8x-3x-4x=3-2=>x=1
SPER CA TE-AM AJUTAT SI ASTEPT CORONITA =)

Answer 2

a) 8x= 16
x=16:2
x=2

b)8x-4=0
8x=4
x= 4/8
x=1/2

c)10-x=2
10-2= x
x=8

d)13x-9=4
13x= 4+9
13x=13
x=1

e)3*(x+5)=15  | :3
x+5=5
x=0

f)4x+5= 3*(x+1)+7
4x+5= 3x+3+7
4x-3x= 10-5
x=5

g)8x+2=3*(x+1)+4x
8x+2=3x+3+4x
8x-7x=3-2
x=1