40=3y-9-10y

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Solution for 40=3y-9-10y equation:


Simplifying
40 = 3y + -9 + -10y

Reorder the terms:
40 = -9 + 3y + -10y

Combine like terms: 3y + -10y = -7y
40 = -9 + -7y

Solving
40 = -9 + -7y

Solving for variable 'y'.

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

Add '7y' to each side of the equation.
40 + 7y = -9 + -7y + 7y

Combine like terms: -7y + 7y = 0
40 + 7y = -9 + 0
40 + 7y = -9

Add '-40' to each side of the equation.
40 + -40 + 7y = -9 + -40

Combine like terms: 40 + -40 = 0
0 + 7y = -9 + -40
7y = -9 + -40

Combine like terms: -9 + -40 = -49
7y = -49

Divide each side by '7'.
y = -7

Simplifying
y = -7

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