-21-7X=7(x+3)

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


Simplifying
-21 + -7X = 7(x + 3)

Reorder the terms:
-21 + -7X = 7(3 + x)
-21 + -7X = (3 * 7 + x * 7)
-21 + -7X = (21 + 7x)

Solving
-21 + -7X = 21 + 7x

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 + -7X = 21 + 21 + 7x

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

Combine like terms: 21 + 21 = 42
-7X = 42 + 7x

Divide each side by '-7'.
X = -6 + -1x

Simplifying
X = -6 + -1x

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