a+4=7-a

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Solution for a+4=7-a equation:


Simplifying
a + 4 = 7 + -1a

Reorder the terms:
4 + a = 7 + -1a

Solving
4 + a = 7 + -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 + a + a = 7 + -1a + a

Combine like terms: a + a = 2a
4 + 2a = 7 + -1a + a

Combine like terms: -1a + a = 0
4 + 2a = 7 + 0
4 + 2a = 7

Add '-4' to each side of the equation.
4 + -4 + 2a = 7 + -4

Combine like terms: 4 + -4 = 0
0 + 2a = 7 + -4
2a = 7 + -4

Combine like terms: 7 + -4 = 3
2a = 3

Divide each side by '2'.
a = 1.5

Simplifying
a = 1.5

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