3(1)-y=7

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Solution for 3(1)-y=7 equation: 


Simplifying
3(1) + -1y = 7

Multiply 3 * 1
3 + -1y = 7

Solving
3 + -1y = 7

Solving for variable 'y'.

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

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

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

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

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

Simplifying
y = -4

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