2-3(1+7a)=26

Solution for 2-3(1+7a)=26 equation:

Simplifying
2 + -3(1 + 7a) = 26
2 + (1 * -3 + 7a * -3) = 26
2 + (-3 + -21a) = 26

Combine like terms: 2 + -3 = -1
-1 + -21a = 26

Solving
-1 + -21a = 26

Solving for variable 'a'.

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

Add '1' to each side of the equation.
-1 + 1 + -21a = 26 + 1

Combine like terms: -1 + 1 = 0
0 + -21a = 26 + 1
-21a = 26 + 1

Combine like terms: 26 + 1 = 27
-21a = 27

Divide each side by '-21'.
a = -1.285714286

Simplifying
a = -1.285714286