3y-40=7y

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Solution for 3y-40=7y equation:


Simplifying
3y + -40 = 7y

Reorder the terms:
-40 + 3y = 7y

Solving
-40 + 3y = 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.
-40 + 3y + -7y = 7y + -7y

Combine like terms: 3y + -7y = -4y
-40 + -4y = 7y + -7y

Combine like terms: 7y + -7y = 0
-40 + -4y = 0

Add '40' to each side of the equation.
-40 + 40 + -4y = 0 + 40

Combine like terms: -40 + 40 = 0
0 + -4y = 0 + 40
-4y = 0 + 40

Combine like terms: 0 + 40 = 40
-4y = 40

Divide each side by '-4'.
y = -10

Simplifying
y = -10

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