42=7(X-3)

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Solution for 42=7(X-3) equation:


Simplifying
42 = 7(X + -3)

Reorder the terms:
42 = 7(-3 + X)
42 = (-3 * 7 + X * 7)
42 = (-21 + 7X)

Solving
42 = -21 + 7X

Solving for variable 'X'.

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

Add '-7X' to each side of the equation.
42 + -7X = -21 + 7X + -7X

Combine like terms: 7X + -7X = 0
42 + -7X = -21 + 0
42 + -7X = -21

Add '-42' to each side of the equation.
42 + -42 + -7X = -21 + -42

Combine like terms: 42 + -42 = 0
0 + -7X = -21 + -42
-7X = -21 + -42

Combine like terms: -21 + -42 = -63
-7X = -63

Divide each side by '-7'.
X = 9

Simplifying
X = 9

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