Combine like terms
4d - 12d
-8d
3x(2)
6x
2x-4=8
x=6
-4+8=
4
Seven more than a number
x+7
3x+4x+10x - 5x
12x
4(5x)
20x
3x-15=45
x=20
-5 + -11
-16
half of a number
(1/2)x or
x/2
4x +(2x-3)
6x-3
2(6)x(3)
36x
12x+10=46
x=3
2+4+7+(-6) =
7
Three more than twice a number
2x+3
5r -7t+14t - 5r
7t
4(2x+10)
8x+40
-7x-5=44
x= -7
-10 - (-40)
30
The difference of 5 and a number
x-5
8x - (3-10x)
-3+18x
3(6x-x)
15x
2(x+8) = 40
x=12
25 + (-10)
15
14 less than five times a number
5x-14