-4(3+4)-21x=72

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Solution for -4(3+4)-21x=72 equation: 


Simplifying
-4(3 + 4) + -21x = 72

Combine like terms: 3 + 4 = 7
-4(7) + -21x = 72

Multiply -4 * 7
-28 + -21x = 72

Solving
-28 + -21x = 72

Solving for variable 'x'.

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

Add '28' to each side of the equation.
-28 + 28 + -21x = 72 + 28

Combine like terms: -28 + 28 = 0
0 + -21x = 72 + 28
-21x = 72 + 28

Combine like terms: 72 + 28 = 100
-21x = 100

Divide each side by '-21'.
x = -4.761904762

Simplifying
x = -4.761904762

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