3y+7(2y-4)=7-12

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Solution for 3y+7(2y-4)=7-12 equation:


Simplifying
3y + 7(2y + -4) = 7 + -12

Reorder the terms:
3y + 7(-4 + 2y) = 7 + -12
3y + (-4 * 7 + 2y * 7) = 7 + -12
3y + (-28 + 14y) = 7 + -12

Reorder the terms:
-28 + 3y + 14y = 7 + -12

Combine like terms: 3y + 14y = 17y
-28 + 17y = 7 + -12

Combine like terms: 7 + -12 = -5
-28 + 17y = -5

Solving
-28 + 17y = -5

Solving for variable 'y'.

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

Add '28' to each side of the equation.
-28 + 28 + 17y = -5 + 28

Combine like terms: -28 + 28 = 0
0 + 17y = -5 + 28
17y = -5 + 28

Combine like terms: -5 + 28 = 23
17y = 23

Divide each side by '17'.
y = 1.352941176

Simplifying
y = 1.352941176

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