20 = 4p + 5 +p
20 = 5p + 5
5p = 20 - 5 = 15
5p = 15
p = 15/5 = 3
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4p+3 = -6p-5 4p+6p = -5-3 10p = -8 p = -0.8 Substituting the value of p into the original equation gives you: -1/5 = -1/5
3p+5+p = -23 3p+p = -23-5 4p = -28 p = -7
3x+5=20 x=5 since 5x3+5=20
A = 77 + 5 + 8 = 20
-15 plus 20 is 5.