y-21=7(x-3)

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


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

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

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

Add '21' to each side of the equation.
-21 + 21 + y = -21 + 21 + 7x

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

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

Solving
y = 7x

Solving for variable 'y'.

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

Simplifying
y = 7x

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