Given the equation: 4(x – 3) = 20
identify the reason for each step in solving the equation.
1st step: 4x – 12 = 20
reason:

2nd step: 4x – 12 + 12 = 20 + 12
» 4x = 32
reason:

3rd step: 4x ÷ 4 = 32 ÷ 4
» x = 8

Step-by-step explanation:

4(x – 3) = 20

1st Step: 4x – 12 = 20

Reason:  Distribute

2nd Step: 4x – 12 + 12 = 20 + 12

» 4x = 32

Reason:  Add 12 to both sides

3rd Step: 4x ÷ 4 = 32 ÷ 4

» x = 8

Reason: Divide both sides by 4

3: 2

step-by-step explanation:

shorter piece is 2: 3, so just reverse it, and you get 3: 2

the answer is 62.8 cubic units