3(7y-4)-(4y+5)=

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Solution for 3(7y-4)-(4y+5)= equation:


Simplifying
3(7y + -4) + -1(4y + 5) = 0

Reorder the terms:
3(-4 + 7y) + -1(4y + 5) = 0
(-4 * 3 + 7y * 3) + -1(4y + 5) = 0
(-12 + 21y) + -1(4y + 5) = 0

Reorder the terms:
-12 + 21y + -1(5 + 4y) = 0
-12 + 21y + (5 * -1 + 4y * -1) = 0
-12 + 21y + (-5 + -4y) = 0

Reorder the terms:
-12 + -5 + 21y + -4y = 0

Combine like terms: -12 + -5 = -17
-17 + 21y + -4y = 0

Combine like terms: 21y + -4y = 17y
-17 + 17y = 0

Solving
-17 + 17y = 0

Solving for variable 'y'.

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

Add '17' to each side of the equation.
-17 + 17 + 17y = 0 + 17

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

Combine like terms: 0 + 17 = 17
17y = 17

Divide each side by '17'.
y = 1

Simplifying
y = 1

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