12x + 9 = - 15
x=−2
9 1 x 2 5
2275
7 0 x 5 0 0
35000
6 3 x 1 0
630
3 7 x 8 2
3034
9 0 x 3 0 0
27 000
7 5 x 4 3
3 225
8 0 x 2 0 0
16 000
-22=x-17
x=-5
x + 15 = 28
x=13
5 4 x 1 6
864
9 6 x 2 0
1 920
4 0 x 3 0
1200
7 0 x 4 0
2800
160 = 7x + 6
x = 22
6 0 x 4 0
2400
5x = -30
x= -6
1 3 x 5 8
754
5 4 x 8 3
4 482
5 0 x 6 0 0
30 000
3 1 8 x 1 6
5088