(3x-21)+(13)=4x-17

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Solution for (3x-21)+(13)=4x-17 equation:


Simplifying
(3x + -21) + (13) = 4x + -17

Reorder the terms:
(-21 + 3x) + (13) = 4x + -17

Remove parenthesis around (-21 + 3x)
-21 + 3x + (13) = 4x + -17
-21 + 3x + 13 = 4x + -17

Reorder the terms:
-21 + 13 + 3x = 4x + -17

Combine like terms: -21 + 13 = -8
-8 + 3x = 4x + -17

Reorder the terms:
-8 + 3x = -17 + 4x

Solving
-8 + 3x = -17 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
-8 + 3x + -4x = -17 + 4x + -4x

Combine like terms: 3x + -4x = -1x
-8 + -1x = -17 + 4x + -4x

Combine like terms: 4x + -4x = 0
-8 + -1x = -17 + 0
-8 + -1x = -17

Add '8' to each side of the equation.
-8 + 8 + -1x = -17 + 8

Combine like terms: -8 + 8 = 0
0 + -1x = -17 + 8
-1x = -17 + 8

Combine like terms: -17 + 8 = -9
-1x = -9

Divide each side by '-1'.
x = 9

Simplifying
x = 9

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