3y+20=7

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Solution for 3y+20=7 equation: 


Simplifying
3y + 20 = 7

Reorder the terms:
20 + 3y = 7

Solving
20 + 3y = 7

Solving for variable 'y'.

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

Add '-20' to each side of the equation.
20 + -20 + 3y = 7 + -20

Combine like terms: 20 + -20 = 0
0 + 3y = 7 + -20
3y = 7 + -20

Combine like terms: 7 + -20 = -13
3y = -13

Divide each side by '3'.
y = -4.333333333

Simplifying
y = -4.333333333

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