Addition/subtraction
7+9
16
3x+9x
12x
2(n+2)
2n+4
8 less than b
b-8
9-6+7
10
-4x-8x+4
-12x+4
3(6n-6)
18n-18
The difference between 4 and 5
4-5
7-10-3
-6
-3x+7+4x-8
x-1
5(3n-2) + (n+2)
16n-8
The sum of a and 3, multiplied by 2
(a+3)(2)
-7-7+3-4
-15
-7x+12+3x-5x+3
-9x+15
-2(n+4) + 4(2n-5)
6n-28
The sum of the double of b and the triple of a
2b+3a
-8-5+3-11-10
-31
-3x-5x+4-8x-8+3+5x
-11x-1
-3(2n-4) - 5(-3n-2)
9n+22
The square of the difference of b and 3
(b - 3)2