3(3y-7)-5y=9

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Solution for 3(3y-7)-5y=9 equation:


Simplifying
3(3y + -7) + -5y = 9

Reorder the terms:
3(-7 + 3y) + -5y = 9
(-7 * 3 + 3y * 3) + -5y = 9
(-21 + 9y) + -5y = 9

Combine like terms: 9y + -5y = 4y
-21 + 4y = 9

Solving
-21 + 4y = 9

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 + 4y = 9 + 21

Combine like terms: -21 + 21 = 0
0 + 4y = 9 + 21
4y = 9 + 21

Combine like terms: 9 + 21 = 30
4y = 30

Divide each side by '4'.
y = 7.5

Simplifying
y = 7.5

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