17=a+6+7

Solution for 17=a+6+7 equation:

Simplifying
17 = a + 6 + 7

Reorder the terms:
17 = 6 + 7 + a

Combine like terms: 6 + 7 = 13
17 = 13 + a

Solving
17 = 13 + 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.
17 + -1a = 13 + a + -1a

Combine like terms: a + -1a = 0
17 + -1a = 13 + 0
17 + -1a = 13

Add '-17' to each side of the equation.
17 + -17 + -1a = 13 + -17

Combine like terms: 17 + -17 = 0
0 + -1a = 13 + -17
-1a = 13 + -17

Combine like terms: 13 + -17 = -4
-1a = -4

Divide each side by '-1'.
a = 4

Simplifying
a = 4