Question

4/3x+1=x+5,(3)

1/7(x-2,3)=9/14

(2x+3)=17

Answer 1

Răspuns:

4/3x+1=x+5 (3)

4/3x+1=x+ 5 3/9

4/3x+1=x+48/9

4/3x-x=48/9-1

4/3x-3x/3=48/9-1

x/3=48/9-1

3x/9=48/9-9/9

x=3/9:9/39

x=3/39

x=1/13

1/7 (x-2,3)=9/14

1/7x-23/70=9/14

10/70x-23/70=9/14

-13/70x=9/14

x=-13/70:14/9=13/45

(2x+3)=17

2x=17-3

2x=14x=7