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Steps for solving 4x - 12 = 20 are shown.
Explain how Step 3 helps solve the equation.
4x - 12 = 20
4x-12 +12 - 20 +12
4x = 32
4x32
4 4
X = 8
Original equation
Step 1
Step 2
Step 3
Step 4
A. Multiplying both sides by 4 undoes the division.
B. Dividing both sides by 4 eliminates the variable.
C. Multiplying both sides by 4 isolates the variable.
D. Dividing both sides by 4 isolates the variable.
SUBMIT

Respuesta :

dselevany
Well when you have 4x=32 you need to divide to isolate the variable - so I’m not sure why after it says 4x32?
haleywilson64

Answer:

D. Dividing both sides by 4 isolates the variable.

Step-by-step explanation:

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