7y-21=10y+5

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Solution for 7y-21=10y+5 equation:


Simplifying
7y + -21 = 10y + 5

Reorder the terms:
-21 + 7y = 10y + 5

Reorder the terms:
-21 + 7y = 5 + 10y

Solving
-21 + 7y = 5 + 10y

Solving for variable 'y'.

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

Add '-10y' to each side of the equation.
-21 + 7y + -10y = 5 + 10y + -10y

Combine like terms: 7y + -10y = -3y
-21 + -3y = 5 + 10y + -10y

Combine like terms: 10y + -10y = 0
-21 + -3y = 5 + 0
-21 + -3y = 5

Add '21' to each side of the equation.
-21 + 21 + -3y = 5 + 21

Combine like terms: -21 + 21 = 0
0 + -3y = 5 + 21
-3y = 5 + 21

Combine like terms: 5 + 21 = 26
-3y = 26

Divide each side by '-3'.
y = -8.666666667

Simplifying
y = -8.666666667

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