-40=y+7

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Solution for -40=y+7 equation:


Simplifying
-40 = y + 7

Reorder the terms:
-40 = 7 + y

Solving
-40 = 7 + y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
-40 + -1y = 7 + y + -1y

Combine like terms: y + -1y = 0
-40 + -1y = 7 + 0
-40 + -1y = 7

Add '40' to each side of the equation.
-40 + 40 + -1y = 7 + 40

Combine like terms: -40 + 40 = 0
0 + -1y = 7 + 40
-1y = 7 + 40

Combine like terms: 7 + 40 = 47
-1y = 47

Divide each side by '-1'.
y = -47

Simplifying
y = -47

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