2(1-4b)+7b=3

Solution for 2(1-4b)+7b=3 equation:

Simplifying
2(1 + -4b) + 7b = 3
(1 * 2 + -4b * 2) + 7b = 3
(2 + -8b) + 7b = 3

Combine like terms: -8b + 7b = -1b
2 + -1b = 3

Solving
2 + -1b = 3

Solving for variable 'b'.

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

Add '-2' to each side of the equation.
2 + -2 + -1b = 3 + -2

Combine like terms: 2 + -2 = 0
0 + -1b = 3 + -2
-1b = 3 + -2

Combine like terms: 3 + -2 = 1
-1b = 1

Divide each side by '-1'.
b = -1

Simplifying
b = -1