Their ages are 18, 19, and 20 bc we is gud at maths boi
Answer:where is the diagram so i could help you
Step-by-step explanation:
They are independent because they do not rely on each other.
4 legged tables : x
3 legged stools : y
x + y = 20 y= 20 - x
4x + 3y = 68
Replace y by 20 - x so we only have one letter
4x + 3(20 - x) =68
4x + 60 - 3x =68
x + 60 = 68
x = 8
To find y replace x by 8
y = 20 - 8
y = 12
So you have 8 four legged chairs and 12 three legged stools.
Hope I helped!
Answer:
Step-by-step explanation:
Multiply both sides by 3
Add 
both sides
