2(-3)-7y=9

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Solution for 2(-3)-7y=9 equation: 


Simplifying
2(-3) + -7y = 9

Multiply 2 * -3
-6 + -7y = 9

Solving
-6 + -7y = 9

Solving for variable 'y'.

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

Add '6' to each side of the equation.
-6 + 6 + -7y = 9 + 6

Combine like terms: -6 + 6 = 0
0 + -7y = 9 + 6
-7y = 9 + 6

Combine like terms: 9 + 6 = 15
-7y = 15

Divide each side by '-7'.
y = -2.142857143

Simplifying
y = -2.142857143

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