y=(x-7)+(21-7x)

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


Simplifying
y = (x + -7) + (21 + -7x)

Reorder the terms:
y = (-7 + x) + (21 + -7x)

Remove parenthesis around (-7 + x)
y = -7 + x + (21 + -7x)

Remove parenthesis around (21 + -7x)
y = -7 + x + 21 + -7x

Reorder the terms:
y = -7 + 21 + x + -7x

Combine like terms: -7 + 21 = 14
y = 14 + x + -7x

Combine like terms: x + -7x = -6x
y = 14 + -6x

Solving
y = 14 + -6x

Solving for variable 'y'.

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

Simplifying
y = 14 + -6x

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