7y-(3y+4)=20

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Solution for 7y-(3y+4)=20 equation:


Simplifying
7y + -1(3y + 4) = 20

Reorder the terms:
7y + -1(4 + 3y) = 20
7y + (4 * -1 + 3y * -1) = 20
7y + (-4 + -3y) = 20

Reorder the terms:
-4 + 7y + -3y = 20

Combine like terms: 7y + -3y = 4y
-4 + 4y = 20

Solving
-4 + 4y = 20

Solving for variable 'y'.

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

Add '4' to each side of the equation.
-4 + 4 + 4y = 20 + 4

Combine like terms: -4 + 4 = 0
0 + 4y = 20 + 4
4y = 20 + 4

Combine like terms: 20 + 4 = 24
4y = 24

Divide each side by '4'.
y = 6

Simplifying
y = 6

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