Simplifying p + -4 = (-9) + p
Reorder the terms: -4 + p = (-9) + p -4 + p = -9 + p
Add '-1p' to each side of the equation. -4 + p + -1p = -9 + p + -1p
Combine like terms: p + -1p = 0 -4 + 0 = -9 + p + -1p -4 = -9 + p + -1p
Combine like terms: p + -1p = 0 -4 = -9 + 0 -4 = -9
Solving -4 = -9