Repede va rog!......
![Repede Va Rog class=](https://ro-static.z-dn.net/files/d3b/692393c3aaf3eb42ee86c790df546076.png)
Explicație pas cu pas:
a).5x+20-(100÷2-48)=41
=5x+20=41+2=43=
=5x=43-20=23=>5x=23÷5=4,6