Kelia's second step is to multiply both sides of the equation by 4. Multiplying both sides of an equation by the same number is a valid operation as long as that number is not zero. By multiplying both sides by 4, Kelia is essentially scaling the equation by a factor of 4.
For example, if the equation is 3x = 6, to solve for x, Kelia can multiply both sides by 4:
4 * (3x) = 4 * 6
12x = 24
Now the equation becomes 12x = 24, where x is the variable she is trying to solve for.
Kelia is solving an equation for x. Her second step is to multiply both sides of the equation by 4
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