2=1.5+a+6

Solution for 2=1.5+a+6 equation:

Simplifying
2 = 1.5 + a + 6

Reorder the terms:
2 = 1.5 + 6 + a

Combine like terms: 1.5 + 6 = 7.5
2 = 7.5 + a

Solving
2 = 7.5 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
2 + -1a = 7.5 + a + -1a

Combine like terms: a + -1a = 0
2 + -1a = 7.5 + 0
2 + -1a = 7.5

Add '-2' to each side of the equation.
2 + -2 + -1a = 7.5 + -2

Combine like terms: 2 + -2 = 0
0 + -1a = 7.5 + -2
-1a = 7.5 + -2

Combine like terms: 7.5 + -2 = 5.5
-1a = 5.5

Divide each side by '-1'.
a = -5.5

Simplifying
a = -5.5