-3(-1-7x)=45

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Solution for -3(-1-7x)=45 equation: 


Simplifying
-3(-1 + -7x) = 45
(-1 * -3 + -7x * -3) = 45
(3 + 21x) = 45

Solving
3 + 21x = 45

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 = 45 + -3

Combine like terms: 3 + -3 = 0
0 + 21x = 45 + -3
21x = 45 + -3

Combine like terms: 45 + -3 = 42
21x = 42

Divide each side by '21'.
x = 2

Simplifying
x = 2

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