7y+2(1-y)=8y-4

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Solution for 7y+2(1-y)=8y-4 equation:


Simplifying
7y + 2(1 + -1y) = 8y + -4
7y + (1 * 2 + -1y * 2) = 8y + -4
7y + (2 + -2y) = 8y + -4

Reorder the terms:
2 + 7y + -2y = 8y + -4

Combine like terms: 7y + -2y = 5y
2 + 5y = 8y + -4

Reorder the terms:
2 + 5y = -4 + 8y

Solving
2 + 5y = -4 + 8y

Solving for variable 'y'.

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

Add '-8y' to each side of the equation.
2 + 5y + -8y = -4 + 8y + -8y

Combine like terms: 5y + -8y = -3y
2 + -3y = -4 + 8y + -8y

Combine like terms: 8y + -8y = 0
2 + -3y = -4 + 0
2 + -3y = -4

Add '-2' to each side of the equation.
2 + -2 + -3y = -4 + -2

Combine like terms: 2 + -2 = 0
0 + -3y = -4 + -2
-3y = -4 + -2

Combine like terms: -4 + -2 = -6
-3y = -6

Divide each side by '-3'.
y = 2

Simplifying
y = 2

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