P = 2l + 2w
p-2w = 2l
p-2w/2 = l
Substitute the perimeter and you should be able to work it out
Answer:
x=5
Step-by-step explanation:
x-3x can be simplied to -2x and 3-9 can be simplied to -6
-2x+4=-6
Substract 4 from both sides
-2x=-10
Divide both sides by -2
x=5
15= 3*5
14= 2*7
LCM(15,14)= 2*3*5*7= 210
15 and 14 go into 210 evenly~
