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21v + 8 - 12v -3t - t
9v + 8 -4t
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Okay!
-7d - (-40) +8d
d +40
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Okay!
-15j -18k -24j -18k
-39j - 36k
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Okay!
5x - 3x - 8x + 2
-6x + 2
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Okay!
-2f -1f - (-6) +5f
2f + 6
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Okay!
5x - 9x - 3x
-7x
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Okay!
3z + 6 + 4z + 9 + 8u
7z + 15 + 8u
Oops!
Okay!
14y + 13x -12y -19x +4
2y -6x + 4
Oops!
Okay!
7y + 2(2 + 5y)
17y +4
Oops!
Okay!
5x + 18 -13y -12x +8y
-7x +18 -5y
Oops!
Okay!
53t - (-20r) +17 -10t
43t +20r +17
Oops!
Okay!
2x + 8z + 13u + 6z + 4u
2x + 14z +17u
Oops!
Okay!
-20y +9(-5 -3y)
-47y-45
Oops!
Okay!
-10 (-6 -4x ) + 3x
60 + 43x
Oops!
Okay!
-7w -5 +17w +15
10w +10
Oops!
Okay!
9x + 3 - 7x +4
2x + 7
Oops!
Okay!
5 + 7(-3y +3)
26-21y
Oops!
Okay!
-5r + 3q -8q -r
-6r -5q
Oops!
Okay!
21b -11b -10 -12b
-2b -10
Oops!
Okay!
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