6.EE.4
x+x+x+x
4x
2/3 x 4/5
8/15
(2x + 3) + (1 +x)
3x + 4
3x + 12
1x + 4
(-2) - (-7)
-5
4x+3+2x
6x+3
7/10 x 2/5
7/25
(2x - 3) - (1 + x)
1x + (-4)
4x + 12
1x + 3
11+9x+2-6x
13-15
2/8 x 2/4
1/8
(3x + 1) - x - (2x + 3)
2x + (-2)
10x + 15
2x + 3
2(x+6)
2x+6
2/3 / 3/4
8/9
(
2x + 3) + 3x - (2x + 4)
3x + -1
10x - 15
2x + -3
4(x+1)+3x
5x=5
5/6 / 2/5
25/12
(2x + 10 - (5 - 3x) + (2 + x)
6x + (-2)
-3x + 6
-1x + 2