Translate the phrase into a math expression.

12 less than twice a number

a.
2 · (n – 12)

b.
2 · n - 12

c.
2 · n ÷ 12

d.
12 – 2 · n

i believe its d but im not 100% someone explain to me : /

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11