Answer:
x - 2y = 32
Step-by-step explanation:
Start with y + 7 = (1/2)(x - 18).
Clear out the fractions by mult. both sides by 2:
2y + 14 = x - 18
Subtract 2y + 14 from both sides, obtaining:
0 = x - 2y - 14 - 18, or
0 = x - 2y - 32
Then x - 2y = 32. This is in standard form.
