5x -3y + 7y + 3y
3,60
h=5
x=-12
a= 2 b= 3 h= x
8x +4y
8 + X = 12
-2
a= 3 b= 4 h= x
8^5
[7 +(- 4:2).8 +7]
x=4
800 000
x=5
10
7 + x= -5 -7
(18 : 9) . (15:3)
