3a+4=5-a

Solution for 3a+4=5-a equation:

Simplifying
3a + 4 = 5 + -1a

Reorder the terms:
4 + 3a = 5 + -1a

Solving
4 + 3a = 5 + -1a

Solving for variable 'a'.

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

Add 'a' to each side of the equation.
4 + 3a + a = 5 + -1a + a

Combine like terms: 3a + a = 4a
4 + 4a = 5 + -1a + a

Combine like terms: -1a + a = 0
4 + 4a = 5 + 0
4 + 4a = 5

Add '-4' to each side of the equation.
4 + -4 + 4a = 5 + -4

Combine like terms: 4 + -4 = 0
0 + 4a = 5 + -4
4a = 5 + -4

Combine like terms: 5 + -4 = 1
4a = 1

Divide each side by '4'.
a = 0.25

Simplifying
a = 0.25