Answer:
Step-by-step explanation:
add 12 and a number: 12 + c
subtract a number from 12: 12 - c
divide a number by 12: c : 12 or c/12
multiply 12 by a number: 12 · c = 12c
x=54°
x+126=180 supplementary
x=180-126
x=54
x = -2
46 ft2
esorry if it doesnt lph
