Question

Exercitiile 10 si 11 va rog!!Dau coroana!!!!

Answer 1

doar pana la 11 punctul a am putut sa trimit poze

b)(2/5-2/5*x/1):2/5=0,16

(2/5-2x/5):2/5=16/10

x/5:2/5=16/10

16-5x/10

-5x=16^2=8/5

x=8/5+5/1=8+25/5=33/5

c)1/4*(1/4x-1/4)-3

1/4*x=-3

4x=-4/3-1/4:4

4x=-12-1/4

4x=-13/4

4×=-13/4:4/1=-13/4*1/4

x=-13/16

d)3/7*(3/7+3/7*×/1)=-1

3/7(3/7+3×/7)=-1

3/7*6×/7=-1

18×/7=-1

×=-1/1-18/7imapatim prin 18

×=-7-18/7 impartim prin 18

×=25:18/1=25/7*1/18

×=25/126=5,04