Question

Exercitiul nr 1 dau coroană ​

Answer 1

a) x+3 = 0

x = -3

b) x-6 = 0

x = 6

c) x+3 = 1

x = -2

d) x+6 = -5

x = -11

e) -x+1 = -3

-x = -4

x = 4

f) -2x = 0

x = 0

g) -7x+49 = 0

-7x = -49

x = 7

h) -2x+1 = 5

-2x = 4

x = -2

i) -x-7 = -7

-x = 0

x = 0

j) 7x-3 = 25

7x = 28

x = 4

k) -4x-6 = -34

-4x = -28

x = 7

l) 2-x = 3

-x = 1

x = -1

m) -3x+1 = 4

-3x = 3

x = -1

n) 3x-1 = 7

3x = 8

x = 8/3

o) -3x+x = 10

-2x = 10

x = -5

p) 4x+5x = 10

9x = 10

x = 10/9

q) 24-2x = 32

-2x = 8

x = -4

r) 2x-3x = 5

-x = 5

x = -5