40+[4y-9]+y=180

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Solution for 40+[4y-9]+y=180 equation:


Simplifying
40 + [4y + -9] + y = 180

Reorder the terms:
40 + [-9 + 4y] + y = 180

Remove brackets around [-9 + 4y]
40 + -9 + 4y + y = 180

Combine like terms: 40 + -9 = 31
31 + 4y + y = 180

Combine like terms: 4y + y = 5y
31 + 5y = 180

Solving
31 + 5y = 180

Solving for variable 'y'.

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

Add '-31' to each side of the equation.
31 + -31 + 5y = 180 + -31

Combine like terms: 31 + -31 = 0
0 + 5y = 180 + -31
5y = 180 + -31

Combine like terms: 180 + -31 = 149
5y = 149

Divide each side by '5'.
y = 29.8

Simplifying
y = 29.8

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