20+2N=52
now subtract 20 from each side, to get 2N alone
2N=32
now divide each side by 2
N=16
3/4 foot is 9 inches, and 4 1/2 feet is 54 inches, so, 54/9 makes exactly 6 pieces of string.
Answer:
-9/4
Step-by-step explanation:
18x+36-2x=0
16x+36=0
4(4x+9)=0
x=-9/4
An expression is a mathematical phrase containing at least one variable :)
