3y+18=30+-1y

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Solution for 3y+18=30+-1y equation:


Simplifying
3y + 18 = 30 + -1y

Reorder the terms:
18 + 3y = 30 + -1y

Solving
18 + 3y = 30 + -1y

Solving for variable 'y'.

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

Add 'y' to each side of the equation.
18 + 3y + y = 30 + -1y + y

Combine like terms: 3y + y = 4y
18 + 4y = 30 + -1y + y

Combine like terms: -1y + y = 0
18 + 4y = 30 + 0
18 + 4y = 30

Add '-18' to each side of the equation.
18 + -18 + 4y = 30 + -18

Combine like terms: 18 + -18 = 0
0 + 4y = 30 + -18
4y = 30 + -18

Combine like terms: 30 + -18 = 12
4y = 12

Divide each side by '4'.
y = 3

Simplifying
y = 3

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