Question

Am nevoie de ajutor la ex 7 si 8

Answer 1

Răspuns:

7. 15.08

8. x=0

Sper ca te-am ajutat!

Explicație pas cu pas:

7.

2.6·{5.8+6.25·[9.3-3.1·(8.76-2·2.88)]}

=2.6·{5.8+6.25·[9.3-3.1·(8.76-5.76)]}

=2.6·[5.8+6.25·{9.3-3.1·3)]

=2.6·[5.8+6.25·{9.3-9.3)]

=2.6·(5.8+6.25·0)

=2.6·5.8

=15.08

8.

[1.2+3.2·(3x+0.75)]:3=3.6

3.2·(3x+0.75)/3=3.6-1.2

(3x+0.75)/3=2.4/3.2

(3x+0.75)/3=24/32

3x+0.75=0.75

3x=0.75-0.75

3x=0 => x=0