Answer:
81(x + 2y)(x - 2y)
Step-by-step explanation:

Step-by-step explanation:
5x-6+7x+18=180
12x=180+6-18
12x=168
168÷12=14
X=14
for y
3y+11=7x+18(7×14+18)
3y+11=116
3y=116-11
3y=105
y= 35
Answer:
i don't have the table so no one can answer
Step-by-step explanation:
Step-by-step explanation:

Answer:
108 1/8
Step-by-step explanation:
1/4=0.25, 1/5=0.2
=>26+0.2=26.2
=>26.2/0.25=108.8