Equation step-by-step:
10p + 2 - 2p = 4p - 10
10p - 2p = 4p - 10 - 2
8p = 4p - 10 - 2
8p = 4p - 12
8p -4p = -12
4p = -12
p = -12 / 4
p = -3
Hope it helped,
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