1) (x - 8) * 12 = 132;
x - 8 = 132 : 12;
x - 8 = 11;
x = 11 + 8;
x = 19;
2) 84 : x + 5 = 17;
84 : x = 17 - 5;
84 : x = 12;
x = 84 : 12;
x = 7.
1) (x - 8) * 12 = 132;
x - 8 = 132 : 12;
x - 8 = 11;
x = 11 + 8;
x = 19;
2) 84 : x + 5 = 17;
84 : x = 17 - 5;
84 : x = 12;
x = 84 : 12;
x = 7.