(-7x)-21=(-2x)-6(-5x)

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Solution for (-7x)-21=(-2x)-6(-5x) equation:


Simplifying
(-7x) + -21 = (-2x) + -6(-5x)

Reorder the terms:
-21 + (-7x) = (-2x) + -6(-5x)

Remove parenthesis around (-5x)
-21 + (-7x) = (-2x) + -6 * -5x

Multiply -6 * -5
-21 + (-7x) = (-2x) + 30x

Combine like terms: (-2x) + 30x = 28x
-21 + (-7x) = 28x

Solving
-21 + (-7x) = 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.
-21 + (-7x) + -28x = 28x + -28x

Combine like terms: (-7x) + -28x = -35x
-21 + -35x = 28x + -28x

Combine like terms: 28x + -28x = 0
-21 + -35x = 0

Add '21' to each side of the equation.
-21 + 21 + -35x = 0 + 21

Combine like terms: -21 + 21 = 0
0 + -35x = 0 + 21
-35x = 0 + 21

Combine like terms: 0 + 21 = 21
-35x = 21

Divide each side by '-35'.
x = -0.6

Simplifying
x = -0.6

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