Answer:
y = 1
Step-by-step explanation:
Simplifying
(y + 5) + (3y + -9) = 0
Reorder the terms:
(5 + y) + (3y + -9) = 0
Remove parenthesis around (5 + y)
5 + y + (3y + -9) = 0
Reorder the terms:
5 + y + (-9 + 3y) = 0
Remove parenthesis around (-9 + 3y)
5 + y + -9 + 3y = 0
Reorder the terms:
5 + -9 + y + 3y = 0
Combine like terms: 5 + -9 = -4
-4 + y + 3y = 0
Combine like terms: y + 3y = 4y
-4 + 4y = 0
Solving
-4 + 4y = 0
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 = 0 + 4
Combine like terms: -4 + 4 = 0
0 + 4y = 0 + 4
4y = 0 + 4
Combine like terms: 0 + 4 = 4
4y = 4
Divide each side by '4'.
y = 1
Simplifying
y = 1
