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Algebra
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10p + 3p
13p
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Okay!
2xy, when x = 2 and y = 3
12
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Okay!
a + 5 - b, when a = 10 and b = 3
12
Oops!
Okay!
3x - y, when x = 6 and y = 3
15
Oops!
Okay!
p + 2p + 3q
3p + 3q
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Okay!
5ab, when a = 2 and b = 3
30
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Okay!
7a - 3a
4a
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Okay!
2(a+b), when a = 3 and b = 4
14
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Okay!
2p + 3, when p = 4
11
Oops!
Okay!
3p - 5 + 2p
5p - 5
Oops!
Okay!
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