Question

Cine ma poate ajuta si le mine la exercitiile de mai sus,e foarte urgent!

Answer 1

Salutare!

1. 11/100 : 11/50 + ( 2,5 - 2,(3) • 5/7 ) • ( 7/3 • 15/14 + 1/2 ) =

11/100 : 50/11 + ( 25 - 30/7 ) • ( 5/2 + 1/2 )

1/2 + 145/7 • 3

1/2 + 435/7

= 877/14

2. 6x/45 - x+1/3 = 2(x+4)/10 - x+2/3 =

6x/45 - x+1/3 = 2x+8/10 - x+2/3

12x - 30(x+1) = 9(2x+8) - 30(x+2)

12x - 30x - 30 = 18x + 72 - 30x - 60

12x - 30 = 18x + 72 - 60

12x - 30 = 18x + 12

12x - 18x = 12 + 30

-6x = 42

= x = -7

Sper că te-am ajutat!

:)