8-1-Y=7-4

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Solution for 8-1-Y=7-4 equation:


Simplifying
8 + -1 + -1Y = 7 + -4

Combine like terms: 8 + -1 = 7
7 + -1Y = 7 + -4

Combine like terms: 7 + -4 = 3
7 + -1Y = 3

Solving
7 + -1Y = 3

Solving for variable 'Y'.

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

Add '-7' to each side of the equation.
7 + -7 + -1Y = 3 + -7

Combine like terms: 7 + -7 = 0
0 + -1Y = 3 + -7
-1Y = 3 + -7

Combine like terms: 3 + -7 = -4
-1Y = -4

Divide each side by '-1'.
Y = 4

Simplifying
Y = 4

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