1) 15x+2 = 32
15x = 32-2
15x = 30 /:15
x = 2
2) 5x/3 = 25 /*3
5x = 75 /:5
x = 15
3) -2 = x+5
-2-5 = x
-7 = x
x = -7
4) x+1⅛ = 2⅜
x = 2⅜-1⅛
x = 1 2/8
x = 1 ¼
5) 5,3 = x-1,4
5,3+1,4 = x
6,7 = x
6) 15 = -3x /:-3
-5 = x
x = -5
7) 2x+5+x-2 = 12
3x+3 = 12
3x = 12-3
3x = 9 /:3
x = 3
