4(-3-y)-9=-7

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Solution for 4(-3-y)-9=-7 equation:


Simplifying
4(-3 + -1y) + -9 = -7
(-3 * 4 + -1y * 4) + -9 = -7
(-12 + -4y) + -9 = -7

Reorder the terms:
-12 + -9 + -4y = -7

Combine like terms: -12 + -9 = -21
-21 + -4y = -7

Solving
-21 + -4y = -7

Solving for variable 'y'.

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

Add '21' to each side of the equation.
-21 + 21 + -4y = -7 + 21

Combine like terms: -21 + 21 = 0
0 + -4y = -7 + 21
-4y = -7 + 21

Combine like terms: -7 + 21 = 14
-4y = 14

Divide each side by '-4'.
y = -3.5

Simplifying
y = -3.5

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