7(3)+3y=18

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Solution for 7(3)+3y=18 equation: 


Simplifying
7(3) + 3y = 18

Multiply 7 * 3
21 + 3y = 18

Solving
21 + 3y = 18

Solving for variable 'y'.

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

Add '-21' to each side of the equation.
21 + -21 + 3y = 18 + -21

Combine like terms: 21 + -21 = 0
0 + 3y = 18 + -21
3y = 18 + -21

Combine like terms: 18 + -21 = -3
3y = -3

Divide each side by '3'.
y = -1

Simplifying
y = -1

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