Question

Does anyone know this ones solution? 3(y+1)=4y-21​

Answer 1

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 2

Answer:

3 (y+1) = 4y - 21​

3y + 3 = 4y - 21

21 + 3 = 4y - 3y

24 = y

y = 24