Question

7 Rezolvați ecuațiile:
a 1,5x-6=0;
d 0,7x = -21
c.2,5x = -15;
b 3,2x +16=0;

Answer 1

Răspuns:

a)1,5x=6

x=6÷1,5=4

d)x=-21÷0,7=-21×10/7=-210/7=-30

c)x=-15÷2,5=-15×10/25=-150/25=-6

b)3,2x=-16

x=-16÷3,2=-16×10/32=-160/32=-5