2y-[7-5y]21=0

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Solution for 2y-[7-5y]21=0 equation:


Simplifying
2y + -1[7 + -5y] * 21 = 0

Reorder the terms for easier multiplication:
2y + -1 * 21[7 + -5y] = 0

Multiply -1 * 21
2y + -21[7 + -5y] = 0
2y + [7 * -21 + -5y * -21] = 0
2y + [-147 + 105y] = 0

Reorder the terms:
-147 + 2y + 105y = 0

Combine like terms: 2y + 105y = 107y
-147 + 107y = 0

Solving
-147 + 107y = 0

Solving for variable 'y'.

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

Add '147' to each side of the equation.
-147 + 147 + 107y = 0 + 147

Combine like terms: -147 + 147 = 0
0 + 107y = 0 + 147
107y = 0 + 147

Combine like terms: 0 + 147 = 147
107y = 147

Divide each side by '107'.
y = 1.373831776

Simplifying
y = 1.373831776

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