-21-4x=-30

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Solution for -21-4x=-30 equation: 


Simplifying
-21 + -4x = -30

Solving
-21 + -4x = -30

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + -4x = -30 + 21

Combine like terms: -21 + 21 = 0
0 + -4x = -30 + 21
-4x = -30 + 21

Combine like terms: -30 + 21 = -9
-4x = -9

Divide each side by '-4'.
x = 2.25

Simplifying
x = 2.25

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