a) 3x+9=-3+9
b) -27x+1=2x+59
c) 45x-19=19x-45
d) 82x-9=-18+1
e)5x-12=4+4x
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a)
3x = -3 - 9 +9
3x = -3 /3
x = -1
Spr:
(3 x (-1) +9 = -3+9
6 = 6
L=P
b)
-27x+1=2x+59
-29x = 58 /-29
x = -2
Spr:
-27 x(-2)+1=2 x(-2)+59
55 = 55
L = P
c)
45x-19=19x-45
26x = -26 / 26
x = -1
Spr:
45 x(-1)-19=19 x(-1) -45
-64 = -64
L = P
d)
82x-9=-18+1
82x = -8 /82
x = -8/82
Spr:
(82 x -8/82) - 9 = -17
-17 = -17
L = P
e)
5x-12=4+4x
x = 16
Spr:
5 x(16) - 12 = 4 + 4 x(16)
68 = 68
L = P
a) 3x+9=-3+9
3x=6-9
3x=-3/:3
x= -1
3*(-1)+9= -3+9
-3+9= -3+9
b) -27x+1=2x+59
-27x -2x= 59-1
-29x=58/:29
x=-2
-27*(-2) +1=2*(-2) +59
54+1= -4+59
55=55
c) 45x-19=19x-45
45x -19x= -45+19
26x= -26/:26
x=-1
45*(-1)-19=19*(-1)-45
-45-19=-19-45
-65= -65
d) 82x-9=-18+1
82x= -17+9
82x= -8/:82
x = -8/82
(82 x -8/82) - 9 = -17
-17 = -17
e)5x-12=4+4x
5x-4x=4+12
x=16
5*16-12=4+4*16
80-12=4+64
68=68