Addition
A number plus 8
X+8
A number minus 6
X-6
Half of a number
X/2
5 Multiplied by a number
5x
A number multiplied by 3, then increased by 5
3x+5
the sum of a number and 15
X+15
The difference between a number and 12
X-12
The quotient of a number and 5
X/5
The product of a number and 3
3x
Twice a number, minus 4, then divided by 6
(2x-4) / 6
A number increased by 7 then added to 12
(X+7)+12
A number decreased by 9, then subtracted from 25
(X-9)-25
A number divided by 3, then divided by 2
(X/3)/2
A number times 2, then multiplied by 4
4(2x)
The sum of a number and 8, then multiplied by 2
(x+8)x2
Three times a number, plus 9
3x+9
Twice a number minus 5
2x-5
4 divided by a number
4/X
3 times the sum of a number and 6
3(X+6)
A number divided by 5, then increased by 7
(x/5)+7