13+9(3+y)-10=280

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Solution for 13+9(3+y)-10=280 equation: 


Simplifying
13 + 9(3 + y) + -10 = 280
13 + (3 * 9 + y * 9) + -10 = 280
13 + (27 + 9y) + -10 = 280

Reorder the terms:
13 + 27 + -10 + 9y = 280

Combine like terms: 13 + 27 = 40
40 + -10 + 9y = 280

Combine like terms: 40 + -10 = 30
30 + 9y = 280

Solving
30 + 9y = 280

Solving for variable 'y'.

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

Add '-30' to each side of the equation.
30 + -30 + 9y = 280 + -30

Combine like terms: 30 + -30 = 0
0 + 9y = 280 + -30
9y = 280 + -30

Combine like terms: 280 + -30 = 250
9y = 250

Divide each side by '9'.
y = 27.77777778

Simplifying
y = 27.77777778

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