5x+7-4x=-21

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Solution for 5x+7-4x=-21 equation:


Simplifying
5x + 7 + -4x = -21

Reorder the terms:
7 + 5x + -4x = -21

Combine like terms: 5x + -4x = 1x
7 + 1x = -21

Solving
7 + 1x = -21

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 + 1x = -21 + -7

Combine like terms: 7 + -7 = 0
0 + 1x = -21 + -7
1x = -21 + -7

Combine like terms: -21 + -7 = -28
1x = -28

Divide each side by '1'.
x = -28

Simplifying
x = -28

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