Question

fara cele incercuite! dau coroana! urgent!

Answer 1

Ex. 10
d. -7(x-3)=-14
-7x+3=-14
-7x=-14-3
-7x=-17
x=-17/-7
e.2(2x-3)=-10
4x-6=-10
4x=-10+6
4x=-4
x=-4/4
x=-1
f. 3(2x-3)=-39
6x-9=-39
6x=-39+9
6x=-30
x=-30/6
x=-5
g. 2(x-8)+4=-6
2x-16+4=-6
2x-12=-6
2x=-6+12
2x=6
x=6/2
x=3
h. -5(x-3)+7=2
-5x+15+7=2
-5x+22=2
-5x=2-22
-5x=-20
x=-20/-5
x=4
i.-6(x+7) +3x=-42
-6x-42+3x=-42
-6x+3x=-42+42
-6x+3x=0
-3x=0
x=0/-3
x=0

Exercitiul 11
f. x=-3
P.S nu pot pune liniile de la modul, so voi rezolva farra
x-4=2
x=6
x-4=-2
x=2
h. x-5=1
x=6
x-5=-1
x=4
i. x+2=11
x=9
x+2=-11
x=-13
j. 2x=8
x=4
2x=-8
x=-4
k.x+3=1
x=-2
x+3=-1
x=-3
l. x+7=9
x=2
x+7=-9
x=-16
M.3X=27
X=9
3x=-27
x=-9
2x+1=5
2x+4
x=2
2x+1=-5
2x=-6
x=-3
-x=7
x=-7
 Sper ca ai inteles, coroana??