2y-21=9y+49

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Solution for 2y-21=9y+49 equation:


Simplifying
2y + -21 = 9y + 49

Reorder the terms:
-21 + 2y = 9y + 49

Reorder the terms:
-21 + 2y = 49 + 9y

Solving
-21 + 2y = 49 + 9y

Solving for variable 'y'.

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

Add '-9y' to each side of the equation.
-21 + 2y + -9y = 49 + 9y + -9y

Combine like terms: 2y + -9y = -7y
-21 + -7y = 49 + 9y + -9y

Combine like terms: 9y + -9y = 0
-21 + -7y = 49 + 0
-21 + -7y = 49

Add '21' to each side of the equation.
-21 + 21 + -7y = 49 + 21

Combine like terms: -21 + 21 = 0
0 + -7y = 49 + 21
-7y = 49 + 21

Combine like terms: 49 + 21 = 70
-7y = 70

Divide each side by '-7'.
y = -10

Simplifying
y = -10

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