-7a+2+8a=5-25

Solution for -7a+2+8a=5-25 equation:

Simplifying
-7a + 2 + 8a = 5 + -25

Reorder the terms:
2 + -7a + 8a = 5 + -25

Combine like terms: -7a + 8a = 1a
2 + 1a = 5 + -25

Combine like terms: 5 + -25 = -20
2 + 1a = -20

Solving
2 + 1a = -20

Solving for variable 'a'.

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

Add '-2' to each side of the equation.
2 + -2 + 1a = -20 + -2

Combine like terms: 2 + -2 = 0
0 + 1a = -20 + -2
1a = -20 + -2

Combine like terms: -20 + -2 = -22
1a = -22

Divide each side by '1'.
a = -22

Simplifying
a = -22