13x+7(-3x-1)=-64

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Solution for 13x+7(-3x-1)=-64 equation:


Simplifying
13x + 7(-3x + -1) = -64

Reorder the terms:
13x + 7(-1 + -3x) = -64
13x + (-1 * 7 + -3x * 7) = -64
13x + (-7 + -21x) = -64

Reorder the terms:
-7 + 13x + -21x = -64

Combine like terms: 13x + -21x = -8x
-7 + -8x = -64

Solving
-7 + -8x = -64

Solving for variable 'x'.

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

Add '7' to each side of the equation.
-7 + 7 + -8x = -64 + 7

Combine like terms: -7 + 7 = 0
0 + -8x = -64 + 7
-8x = -64 + 7

Combine like terms: -64 + 7 = -57
-8x = -57

Divide each side by '-8'.
x = 7.125

Simplifying
x = 7.125

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