7y-21=15y+35

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Solution for 7y-21=15y+35 equation:


Simplifying
7y + -21 = 15y + 35

Reorder the terms:
-21 + 7y = 15y + 35

Reorder the terms:
-21 + 7y = 35 + 15y

Solving
-21 + 7y = 35 + 15y

Solving for variable 'y'.

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

Add '-15y' to each side of the equation.
-21 + 7y + -15y = 35 + 15y + -15y

Combine like terms: 7y + -15y = -8y
-21 + -8y = 35 + 15y + -15y

Combine like terms: 15y + -15y = 0
-21 + -8y = 35 + 0
-21 + -8y = 35

Add '21' to each side of the equation.
-21 + 21 + -8y = 35 + 21

Combine like terms: -21 + 21 = 0
0 + -8y = 35 + 21
-8y = 35 + 21

Combine like terms: 35 + 21 = 56
-8y = 56

Divide each side by '-8'.
y = -7

Simplifying
y = -7

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