21y+13=7y+69

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Solution for 21y+13=7y+69 equation:


Simplifying
21y + 13 = 7y + 69

Reorder the terms:
13 + 21y = 7y + 69

Reorder the terms:
13 + 21y = 69 + 7y

Solving
13 + 21y = 69 + 7y

Solving for variable 'y'.

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

Add '-7y' to each side of the equation.
13 + 21y + -7y = 69 + 7y + -7y

Combine like terms: 21y + -7y = 14y
13 + 14y = 69 + 7y + -7y

Combine like terms: 7y + -7y = 0
13 + 14y = 69 + 0
13 + 14y = 69

Add '-13' to each side of the equation.
13 + -13 + 14y = 69 + -13

Combine like terms: 13 + -13 = 0
0 + 14y = 69 + -13
14y = 69 + -13

Combine like terms: 69 + -13 = 56
14y = 56

Divide each side by '14'.
y = 4

Simplifying
y = 4

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