7x-17=-21+8x

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Solution for 7x-17=-21+8x equation:


Simplifying
7x + -17 = -21 + 8x

Reorder the terms:
-17 + 7x = -21 + 8x

Solving
-17 + 7x = -21 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
-17 + 7x + -8x = -21 + 8x + -8x

Combine like terms: 7x + -8x = -1x
-17 + -1x = -21 + 8x + -8x

Combine like terms: 8x + -8x = 0
-17 + -1x = -21 + 0
-17 + -1x = -21

Add '17' to each side of the equation.
-17 + 17 + -1x = -21 + 17

Combine like terms: -17 + 17 = 0
0 + -1x = -21 + 17
-1x = -21 + 17

Combine like terms: -21 + 17 = -4
-1x = -4

Divide each side by '-1'.
x = 4

Simplifying
x = 4

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