02:18
1314 1.7.4
-2 < 5 + 3x < 20
02:32
Prealgebra 2.6.12
-4 ( x - 2y + 3z)
02:09
Prealgebra 2.5.6
5 - (-3) ^ 2 / -2
02:43
Prealgebra 2.4.4
(-4) ^ 3 = 64
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