3a+7b+a+3=

Solution for 3a+7b+a+3= equation:

Simplifying
3a + 7b + a + 3 = 0

Reorder the terms:
3 + 3a + a + 7b = 0

Combine like terms: 3a + a = 4a
3 + 4a + 7b = 0

Solving
3 + 4a + 7b = 0

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 + 4a + -3 + 7b = 0 + -3

Reorder the terms:
3 + -3 + 4a + 7b = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 4a + 7b = 0 + -3
4a + 7b = 0 + -3

Combine like terms: 0 + -3 = -3
4a + 7b = -3

Add '-7b' to each side of the equation.
4a + 7b + -7b = -3 + -7b

Combine like terms: 7b + -7b = 0
4a + 0 = -3 + -7b
4a = -3 + -7b

Divide each side by '4'.
a = -0.75 + -1.75b

Simplifying
a = -0.75 + -1.75b