139=6-7(1-4x)

Solution for 139=6-7(1-4x) equation:

Simplifying
139 = 6 + -7(1 + -4x)
139 = 6 + (1 * -7 + -4x * -7)
139 = 6 + (-7 + 28x)

Combine like terms: 6 + -7 = -1
139 = -1 + 28x

Solving
139 = -1 + 28x

Solving for variable 'x'.

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

Add '-28x' to each side of the equation.
139 + -28x = -1 + 28x + -28x

Combine like terms: 28x + -28x = 0
139 + -28x = -1 + 0
139 + -28x = -1

Add '-139' to each side of the equation.
139 + -139 + -28x = -1 + -139

Combine like terms: 139 + -139 = 0
0 + -28x = -1 + -139
-28x = -1 + -139

Combine like terms: -1 + -139 = -140
-28x = -140

Divide each side by '-28'.
x = 5

Simplifying
x = 5