Does anyone know this ones solution? 3(y+1)=4y-21
Answers
Step-by-step explanation:
Simplifying
3(y + 1) = 4y + -21
Reorder the terms:
3(1 + y) = 4y + -21
(1 * 3 + y * 3) = 4y + -21
(3 + 3y) = 4y + -21
Reorder the terms:
3 + 3y = -21 + 4y
Solving
3 + 3y = -21 + 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.
3 + 3y + -4y = -21 + 4y + -4y
Combine like terms: 3y + -4y = -1y
3 + -1y = -21 + 4y + -4y
Combine like terms: 4y + -4y = 0
3 + -1y = -21 + 0
3 + -1y = -21
Add '-3' to each side of the equation.
3 + -3 + -1y = -21 + -3
Combine like terms: 3 + -3 = 0
0 + -1y = -21 + -3
-1y = -21 + -3
Combine like terms: -21 + -3 = -24
-1y = -24
Divide each side by '-1'.
y = 24
Simplifying
y = 24
Answer:
3 (y+1) = 4y - 21
3y + 3 = 4y - 21
21 + 3 = 4y - 3y
24 = y
y = 24