Question

Va roooooooogggggg !!! :o3

Answer 1

39) 1/4x+1/3x+12=x-3
       7/12*x-x=-15
(7-12)*x/12=-15
(5/12)*x=15
x=12*15/5
x=36

Vf.  9+12+12=33
36-33=3

 pretul dupa pr.reducere 90/100*x
                    a II-a red.    90/100*x-15/100*x=75/100*x
3/4*x=1377⇒x=1377*4/3⇒x=1836
Vf. 1836-183.6-275.4=1377