Answer:
B. 3x−y=36
Step-by-step explanation:
Multiplying the equation by 3 and subtracting the y-term gives you the desired form.
x = 1/3·y +12
3x = y + 36 . . . . . multiply by 3
3x -y = 36 . . . . . . subtract y to get standard form
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Standard form has ...
- only variable terms on the left side
- a positive leading coefficient
- only a constant on the right side
- all coefficients mutually prime, integers where possible
- variables in lexicographical order (optional, I'd say)
