Question

Va rog, daca se poate,sa ma ajutati! Multumesc frumos.

Answer 1

Răspuns:

a) x=1

b)x=1/42

c)x=13

e) x=13/7

f)x=39/16

g)x=41/5

h)x=10

Explicație pas cu pas:

a)

x+2/3=5/3

x=5/3+2/3

x=1

b)

9/7-2x=4/3

-2x=28/21-27/21

-2x=1/21

x=-1/42

c)

-1/5×x+2/1=-3/5

-1/a5×x=-3/5-10/5

-1/5×x=-13/5

x=-13/5×5/1

x=-13

e)

6(x+1)=36/7

6x+6=36/7

6x=78/7

x=13/7

f)

x÷(-3/4)=325/100

-x×4/3=13/4

x=-39/16

g)

-5/6×x+1/2=22/3

-5/6×x=41/6

x=41/5

h)

75/100×x-325/100=4251/100

3/4×x-13/4=17/4

3/4×x=30/4=15/2

x=10