42=p+[-25]

Solution for 42=p+[-25] equation:

Simplifying
42 = p + [-25]
42 = p + -25

Reorder the terms:
42 = -25 + p

Solving
42 = -25 + p

Solving for variable 'p'.

Move all terms containing p to the left, all other terms to the right.

Add '-1p' to each side of the equation.
42 + -1p = -25 + p + -1p

Combine like terms: p + -1p = 0
42 + -1p = -25 + 0
42 + -1p = -25

Add '-42' to each side of the equation.
42 + -42 + -1p = -25 + -42

Combine like terms: 42 + -42 = 0
0 + -1p = -25 + -42
-1p = -25 + -42

Combine like terms: -25 + -42 = -67
-1p = -67

Divide each side by '-1'.
p = 67

Simplifying
p = 67