9-3(4-7x)=

Solution for 9-3(4-7x)= equation:

Simplifying
9 + -3(4 + -7x) = 0
9 + (4 * -3 + -7x * -3) = 0
9 + (-12 + 21x) = 0

Combine like terms: 9 + -12 = -3
-3 + 21x = 0

Solving
-3 + 21x = 0

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + 21x = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 21x = 0 + 3
21x = 0 + 3

Combine like terms: 0 + 3 = 3
21x = 3

Divide each side by '21'.
x = 0.1428571429

Simplifying
x = 0.1428571429