48789-37679
13319-12208
3+8
79235-67026
[(
5
3
)
3 : (
-2
]
2
: (
8 =
91889+80676
4 = 5,54 X
63727+24572
does 2 go in to 10
5x + 8y + 2x + 6 - 8y