7(3y+1)=5(5y+9)

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Solution for 7(3y+1)=5(5y+9) equation:


Simplifying
7(3y + 1) = 5(5y + 9)

Reorder the terms:
7(1 + 3y) = 5(5y + 9)
(1 * 7 + 3y * 7) = 5(5y + 9)
(7 + 21y) = 5(5y + 9)

Reorder the terms:
7 + 21y = 5(9 + 5y)
7 + 21y = (9 * 5 + 5y * 5)
7 + 21y = (45 + 25y)

Solving
7 + 21y = 45 + 25y

Solving for variable 'y'.

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

Add '-25y' to each side of the equation.
7 + 21y + -25y = 45 + 25y + -25y

Combine like terms: 21y + -25y = -4y
7 + -4y = 45 + 25y + -25y

Combine like terms: 25y + -25y = 0
7 + -4y = 45 + 0
7 + -4y = 45

Add '-7' to each side of the equation.
7 + -7 + -4y = 45 + -7

Combine like terms: 7 + -7 = 0
0 + -4y = 45 + -7
-4y = 45 + -7

Combine like terms: 45 + -7 = 38
-4y = 38

Divide each side by '-4'.
y = -9.5

Simplifying
y = -9.5

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