2a+7b-a+5b=

Solution for 2a+7b-a+5b= equation:

Simplifying
2a + 7b + -1a + 5b = 0

Reorder the terms:
2a + -1a + 7b + 5b = 0

Combine like terms: 2a + -1a = 1a
1a + 7b + 5b = 0

Combine like terms: 7b + 5b = 12b
1a + 12b = 0

Solving
1a + 12b = 0

Solving for variable 'a'.

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

Add '-12b' to each side of the equation.
1a + 12b + -12b = 0 + -12b

Combine like terms: 12b + -12b = 0
1a + 0 = 0 + -12b
1a = 0 + -12b
Remove the zero:
1a = -12b

Divide each side by '1'.
a = -12b

Simplifying
a = -12b