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

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


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

Reorder the terms:
-7(3 + y) + 3(4y + -7) = 4(y + -3) + 9
(3 * -7 + y * -7) + 3(4y + -7) = 4(y + -3) + 9
(-21 + -7y) + 3(4y + -7) = 4(y + -3) + 9

Reorder the terms:
-21 + -7y + 3(-7 + 4y) = 4(y + -3) + 9
-21 + -7y + (-7 * 3 + 4y * 3) = 4(y + -3) + 9
-21 + -7y + (-21 + 12y) = 4(y + -3) + 9

Reorder the terms:
-21 + -21 + -7y + 12y = 4(y + -3) + 9

Combine like terms: -21 + -21 = -42
-42 + -7y + 12y = 4(y + -3) + 9

Combine like terms: -7y + 12y = 5y
-42 + 5y = 4(y + -3) + 9

Reorder the terms:
-42 + 5y = 4(-3 + y) + 9
-42 + 5y = (-3 * 4 + y * 4) + 9
-42 + 5y = (-12 + 4y) + 9

Reorder the terms:
-42 + 5y = -12 + 9 + 4y

Combine like terms: -12 + 9 = -3
-42 + 5y = -3 + 4y

Solving
-42 + 5y = -3 + 4y

Solving for variable 'y'.

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

Add '-4y' to each side of the equation.
-42 + 5y + -4y = -3 + 4y + -4y

Combine like terms: 5y + -4y = 1y
-42 + 1y = -3 + 4y + -4y

Combine like terms: 4y + -4y = 0
-42 + 1y = -3 + 0
-42 + 1y = -3

Add '42' to each side of the equation.
-42 + 42 + 1y = -3 + 42

Combine like terms: -42 + 42 = 0
0 + 1y = -3 + 42
1y = -3 + 42

Combine like terms: -3 + 42 = 39
1y = 39

Divide each side by '1'.
y = 39

Simplifying
y = 39

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