Question

Someone plz help me with These questions :u have to solve for x and show work

4/9x+1/5x=87
-3.8x-5.9x=223.1
x+0.15x=3.45
-3/5x-7/10x+1/2x=-56

Answer 1

ok so the first one is
1.x=135
2.x=-23
3.x=3
4.x=70