7=20+3y

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Solution for 7=20+3y equation:


Simplifying
7 = 20 + 3y

Solving
7 = 20 + 3y

Solving for variable 'y'.

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

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

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

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

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

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

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

Simplifying
y = -4.333333333

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