-20-8x-(x+3)=13

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Solution for -20-8x-(x+3)=13 equation:


Simplifying
-20 + -8x + -1(x + 3) = 13

Reorder the terms:
-20 + -8x + -1(3 + x) = 13
-20 + -8x + (3 * -1 + x * -1) = 13
-20 + -8x + (-3 + -1x) = 13

Reorder the terms:
-20 + -3 + -8x + -1x = 13

Combine like terms: -20 + -3 = -23
-23 + -8x + -1x = 13

Combine like terms: -8x + -1x = -9x
-23 + -9x = 13

Solving
-23 + -9x = 13

Solving for variable 'x'.

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

Add '23' to each side of the equation.
-23 + 23 + -9x = 13 + 23

Combine like terms: -23 + 23 = 0
0 + -9x = 13 + 23
-9x = 13 + 23

Combine like terms: 13 + 23 = 36
-9x = 36

Divide each side by '-9'.
x = -4

Simplifying
x = -4

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