Question

Rezolvati in Z: a) 2x+1=-7 b)3x-1=-13 c)2x+15=5 d) 2x+10=0 e)3x+24=0 f)-2x +1=-7 g)-3x+1=-14 1)3+2x=-7 j)5+2x=-11 k)6_3x=-54 l) 1+9x=-89 m)1-2x=-7 n)5-4x=-3 o)1-6x=-11 NU SCRIETI DOAR REZULTATUL VREAU SA VAD CUM SE REZOLVA, VA ROG MULTT REPEDE

Answer 1

a) 2x + 1 = -7
   2x = -7 - 1
   2x = -8
     x = -8/2
     x = -4

b)  3x-1=-13
3x = -13 +1
3x = -12
x = -12/3
x = -4

c)  2x+15=5
2x = 5 -15
2x = -10
x = -10/2
x = -5

d) 2x+10=0
2x = -10
x = -10/2
x = -5
 
e)3x+24=0
3x = -24
x = -24/3
x = -8

f) -2x +1=-7
-2x = -7 -1
-2x = -8
x = 8/2
x = 4

g) -3x+1=-14
-3x = -14 -1
-3x = -15
x = 15/3
x = 5

i) 3+2x=-7
2x = -7 -3
2x = -10
x = -10/2
x = -5

j) 5+2x=-11
2x = -11 -5
2x = - 16
x = -16/2
x = -8

k) 6-3x=-54
-3x = -54 -6
-3x = -60
x = 60 /3
x =20

l) 1+9x=-89
9x = -89 -1
9x = -90
x = -90/9
x= -10

m)1-2x=-7
-2x = -7 -1
-2x = -8
x = 8/2
x = 4

n) 5-4x=-3
-4x = -3 -5
-4x = -8
x = 8/4
x = 2

o) 1-6x=-11
-6x = -11 -1
-6x = -12
x = 12/2
x=6