2x-3+7(4)-21=

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Solution for 2x-3+7(4)-21= equation:


Simplifying
2x + -3 + 7(4) + -21 = 0

Multiply 7 * 4
2x + -3 + 28 + -21 = 0

Reorder the terms:
-3 + 28 + -21 + 2x = 0

Combine like terms: -3 + 28 = 25
25 + -21 + 2x = 0

Combine like terms: 25 + -21 = 4
4 + 2x = 0

Solving
4 + 2x = 0

Solving for variable 'x'.

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

Add '-4' to each side of the equation.
4 + -4 + 2x = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 2x = 0 + -4
2x = 0 + -4

Combine like terms: 0 + -4 = -4
2x = -4

Divide each side by '2'.
x = -2

Simplifying
x = -2

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