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