It depends what 6(p - 4) - 30p is supposed to equal.
Substituting p = -1, gives:
6((-1) - 4) - 30(-1)
= 6×-5 - 30×-1
= -30 + 30
= 0
Only if 6(p - 4) - 30p = 0 is p = -1 a solution.
Otherwise it is not a solution.
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If your question is about 6p = 108, then here's how you do it. # Divide both sides by 6, so the variable p is by itself. 6p/6 = p, and 108/6 = 18 So, in the above equation, p = 18.
-6p -5 = -9 +8p Add 6p to both sides: -5 = -9 + 14p Add 9 to both sides: +4 = 14p Divide both sides by 14: p =4/14 = 2/7 or 0.2857.. Are you sure that the second term in the equation was -5 and not +5 (as seems more likely)?
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.
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
6p divide by 3p = 2