5-7[9-(3y-7)]=

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Solution for 5-7[9-(3y-7)]= equation:


Simplifying
5 + -7[9 + -1(3y + -7)] = 0

Reorder the terms:
5 + -7[9 + -1(-7 + 3y)] = 0
5 + -7[9 + (-7 * -1 + 3y * -1)] = 0
5 + -7[9 + (7 + -3y)] = 0

Combine like terms: 9 + 7 = 16
5 + -7[16 + -3y] = 0
5 + [16 * -7 + -3y * -7] = 0
5 + [-112 + 21y] = 0

Combine like terms: 5 + -112 = -107
-107 + 21y = 0

Solving
-107 + 21y = 0

Solving for variable 'y'.

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

Add '107' to each side of the equation.
-107 + 107 + 21y = 0 + 107

Combine like terms: -107 + 107 = 0
0 + 21y = 0 + 107
21y = 0 + 107

Combine like terms: 0 + 107 = 107
21y = 107

Divide each side by '21'.
y = 5.095238095

Simplifying
y = 5.095238095

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