3(7)+7y=84

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Solution for 3(7)+7y=84 equation: 


Simplifying
3(7) + 7y = 84

Multiply 3 * 7
21 + 7y = 84

Solving
21 + 7y = 84

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 + 7y = 84 + -21

Combine like terms: 21 + -21 = 0
0 + 7y = 84 + -21
7y = 84 + -21

Combine like terms: 84 + -21 = 63
7y = 63

Divide each side by '7'.
y = 9

Simplifying
y = 9

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