21+-16=7y+15

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Solution for 21+-16=7y+15 equation:


Simplifying
21 + -16 = 7y + 15

Combine like terms: 21 + -16 = 5
5 = 7y + 15

Reorder the terms:
5 = 15 + 7y

Solving
5 = 15 + 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.
5 + -7y = 15 + 7y + -7y

Combine like terms: 7y + -7y = 0
5 + -7y = 15 + 0
5 + -7y = 15

Add '-5' to each side of the equation.
5 + -5 + -7y = 15 + -5

Combine like terms: 5 + -5 = 0
0 + -7y = 15 + -5
-7y = 15 + -5

Combine like terms: 15 + -5 = 10
-7y = 10

Divide each side by '-7'.
y = -1.428571429

Simplifying
y = -1.428571429

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