7(-4-5x)=77

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Solution for 7(-4-5x)=77 equation: 


Simplifying
7(-4 + -5x) = 77
(-4 * 7 + -5x * 7) = 77
(-28 + -35x) = 77

Solving
-28 + -35x = 77

Solving for variable 'x'.

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

Add '28' to each side of the equation.
-28 + 28 + -35x = 77 + 28

Combine like terms: -28 + 28 = 0
0 + -35x = 77 + 28
-35x = 77 + 28

Combine like terms: 77 + 28 = 105
-35x = 105

Divide each side by '-35'.
x = -3

Simplifying
x = -3

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