3y=7[5-3(7-y)]

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Solution for 3y=7[5-3(7-y)] equation:


Simplifying
3y = 7[5 + -3(7 + -1y)]
3y = 7[5 + (7 * -3 + -1y * -3)]
3y = 7[5 + (-21 + 3y)]

Combine like terms: 5 + -21 = -16
3y = 7[-16 + 3y]
3y = [-16 * 7 + 3y * 7]
3y = [-112 + 21y]

Solving
3y = -112 + 21y

Solving for variable 'y'.

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

Add '-21y' to each side of the equation.
3y + -21y = -112 + 21y + -21y

Combine like terms: 3y + -21y = -18y
-18y = -112 + 21y + -21y

Combine like terms: 21y + -21y = 0
-18y = -112 + 0
-18y = -112

Divide each side by '-18'.
y = 6.222222222

Simplifying
y = 6.222222222

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