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p - q = -1
2p + q = ...?
Ini soalnya yakin kayak gini?
kan yang ditanya 2p + q, lalu 2p + q sudah diketahui.
Jadi jawabannya 7
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pembuktiannya :
(2p + q) + (p - q) = (7) + (-1)
2p + p + q - q = 6
3p = 6
p = 6 / 3
p = 2
p - q = -1
2 - q = -1
-q = -1 - 2
-q = -3
q = 3
2p + q = 2(2) + 3
= 4 + 3
= 7
2p+p+q-q=6
3p=6
p=6/3
p=2
p-q=-1
2-q=-1
-q=-1-2
-q=-3
q=3
2p+q=2(2)+3
=4+3
=7