(p) is the variable...it can stand for anything, but what you are trying to do is solve for it. 6p+5=29 is simply 4.
1) Get the variable on one side - Subtract 5 from each side: 6p=24
2) If applicable, make it so there is only "one" variable - Divide each side by 6: p=4
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7p plus 6p equals 13p. You simply combine the like terms by adding the coefficients (7 and 6) together. Therefore, the equation simplifies to 13p.
-9p + 6p = -3p
algebra8p +4 = 10 +6p+8p - 6p = +10 - 42p = 6p = 3
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
14 + 6p = 6 + 7p 8 = p