3=3(y-7)-7y

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


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

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

Combine like terms: 3y + -7y = -4y
3 = -21 + -4y

Solving
3 = -21 + -4y

Solving for variable 'y'.

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

Add '4y' to each side of the equation.
3 + 4y = -21 + -4y + 4y

Combine like terms: -4y + 4y = 0
3 + 4y = -21 + 0
3 + 4y = -21

Add '-3' to each side of the equation.
3 + -3 + 4y = -21 + -3

Combine like terms: 3 + -3 = 0
0 + 4y = -21 + -3
4y = -21 + -3

Combine like terms: -21 + -3 = -24
4y = -24

Divide each side by '4'.
y = -6

Simplifying
y = -6

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