3-(1-3y)=4+7y

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Solution for 3-(1-3y)=4+7y equation:


Simplifying
3 + -1(1 + -3y) = 4 + 7y
3 + (1 * -1 + -3y * -1) = 4 + 7y
3 + (-1 + 3y) = 4 + 7y

Combine like terms: 3 + -1 = 2
2 + 3y = 4 + 7y

Solving
2 + 3y = 4 + 7y

Solving for variable 'y'.

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

Add '-7y' to each side of the equation.
2 + 3y + -7y = 4 + 7y + -7y

Combine like terms: 3y + -7y = -4y
2 + -4y = 4 + 7y + -7y

Combine like terms: 7y + -7y = 0
2 + -4y = 4 + 0
2 + -4y = 4

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

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

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

Divide each side by '-4'.
y = -0.5

Simplifying
y = -0.5

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