7[3-7(y-3)]=63

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Solution for 7[3-7(y-3)]=63 equation:


Simplifying
7[3 + -7(y + -3)] = 63

Reorder the terms:
7[3 + -7(-3 + y)] = 63
7[3 + (-3 * -7 + y * -7)] = 63
7[3 + (21 + -7y)] = 63

Combine like terms: 3 + 21 = 24
7[24 + -7y] = 63
[24 * 7 + -7y * 7] = 63
[168 + -49y] = 63

Solving
168 + -49y = 63

Solving for variable 'y'.

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

Add '-168' to each side of the equation.
168 + -168 + -49y = 63 + -168

Combine like terms: 168 + -168 = 0
0 + -49y = 63 + -168
-49y = 63 + -168

Combine like terms: 63 + -168 = -105
-49y = -105

Divide each side by '-49'.
y = 2.142857143

Simplifying
y = 2.142857143

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