y=2(y-9)-(4y-7)

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Solution for y=2(y-9)-(4y-7) equation:


Simplifying
y = 2(y + -9) + -1(4y + -7)

Reorder the terms:
y = 2(-9 + y) + -1(4y + -7)
y = (-9 * 2 + y * 2) + -1(4y + -7)
y = (-18 + 2y) + -1(4y + -7)

Reorder the terms:
y = -18 + 2y + -1(-7 + 4y)
y = -18 + 2y + (-7 * -1 + 4y * -1)
y = -18 + 2y + (7 + -4y)

Reorder the terms:
y = -18 + 7 + 2y + -4y

Combine like terms: -18 + 7 = -11
y = -11 + 2y + -4y

Combine like terms: 2y + -4y = -2y
y = -11 + -2y

Solving
y = -11 + -2y

Solving for variable 'y'.

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

Add '2y' to each side of the equation.
y + 2y = -11 + -2y + 2y

Combine like terms: y + 2y = 3y
3y = -11 + -2y + 2y

Combine like terms: -2y + 2y = 0
3y = -11 + 0
3y = -11

Divide each side by '3'.
y = -3.666666667

Simplifying
y = -3.666666667

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