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

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

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

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

Combine like terms: 1 + 4 = 5
2(5) + 7b = 3

Multiply 2 * 5
10 + 7b = 3

Solving
10 + 7b = 3

Solving for variable 'b'.

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

Add '-10' to each side of the equation.
10 + -10 + 7b = 3 + -10

Combine like terms: 10 + -10 = 0
0 + 7b = 3 + -10
7b = 3 + -10

Combine like terms: 3 + -10 = -7
7b = -7

Divide each side by '7'.
b = -1

Simplifying
b = -1