pq-r, if p is 3, q is 4, and r is -6 is equal to 3 x 4 - (-6), which is equal to 12 + 6, which is equal to 18.
-6
-18
138 - 20 x 6 = 18
18 = 3 x 6 (six).
3x=18 x=18/3 x=6
1 x 18 = 2 x 9 = 3 x 6 = 18
If: 3x+6 = 18 Then: x = 4
The answer is x = 6
324
3x+12 = 18 3x = 18-12 3x = 6 x = 2
X = 1/3 since 6 is one third of 18.