7x+21(-4x-5)=-65

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Solution for 7x+21(-4x-5)=-65 equation:


Simplifying
7x + 21(-4x + -5) = -65

Reorder the terms:
7x + 21(-5 + -4x) = -65
7x + (-5 * 21 + -4x * 21) = -65
7x + (-105 + -84x) = -65

Reorder the terms:
-105 + 7x + -84x = -65

Combine like terms: 7x + -84x = -77x
-105 + -77x = -65

Solving
-105 + -77x = -65

Solving for variable 'x'.

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

Add '105' to each side of the equation.
-105 + 105 + -77x = -65 + 105

Combine like terms: -105 + 105 = 0
0 + -77x = -65 + 105
-77x = -65 + 105

Combine like terms: -65 + 105 = 40
-77x = 40

Divide each side by '-77'.
x = -0.5194805195

Simplifying
x = -0.5194805195

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