Question

ajutor va rog mult de tot​

Answer 1

a)1.3*x+2.73=2(1.2*x-1)

1.3x+2.73=2.4x-2

1.3x-2.4x=-2-2.73

-1.1x=-4.73

1.1x=4.73

x=4.3

b)x/2*4/9=(x+7)/6

aducem la acelasi numitor(18) si il eliminam

9x+8=3(x+7)

9x+8=3x+21

9x-3x=21-8

6x=13

x=2.1(6)

c)(5x-1)/10=(2x-3)/6+1/3

aducem la acelasi numitor(30) si il eliminam

3(5x-1)=5(2x-3)+10

15x-3=10x-15+10

15x-10x=-15+10+3

5x=-2

x=-0.4