-7a+3+8a=10-25

Solution for -7a+3+8a=10-25 equation:

Simplifying
-7a + 3 + 8a = 10 + -25

Reorder the terms:
3 + -7a + 8a = 10 + -25

Combine like terms: -7a + 8a = 1a
3 + 1a = 10 + -25

Combine like terms: 10 + -25 = -15
3 + 1a = -15

Solving
3 + 1a = -15

Solving for variable 'a'.

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

Add '-3' to each side of the equation.
3 + -3 + 1a = -15 + -3

Combine like terms: 3 + -3 = 0
0 + 1a = -15 + -3
1a = -15 + -3

Combine like terms: -15 + -3 = -18
1a = -18

Divide each side by '1'.
a = -18

Simplifying
a = -18