Odpowiedź:
a) x= -10
b) x= -12
c) x= [tex]\frac{15}{7}[/tex]
d) x= [tex]\frac{3}{5}[/tex]
e) x=4
Szczegółowe wyjaśnienie:
a) 4( X+ 8) = -8
4x+32= -8
4x= -8-32
4x = -40
x= -10
b) -3 ( x + 4) = 24
-3x -12 =24
-3x=24+12
-3x=36
x= -12
c) 7 (x - 5) + 5 = - 15
7x - 35 + 5 = -15
7x = -15 + 35 -5
7x = 15
x= [tex]\frac{15}{7}[/tex]
d) 2x + 8 - X = - 4x + 11
2x - x + 4x = 11 - 8
5x = 3
x = [tex]\frac{3}{5}[/tex]
e) 6X - 9 = 2x +7
6x-2x=7+9
4x=16
x=4
