47=7-y

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Solution for 47=7-y equation:


Simplifying
47 = 7 + -1y

Solving
47 = 7 + -1y

Solving for variable 'y'.

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

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

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

Add '-47' to each side of the equation.
47 + -47 + y = 7 + -47

Combine like terms: 47 + -47 = 0
0 + y = 7 + -47
y = 7 + -47

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

Simplifying
y = -40

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