Answer:
Let the Dulcina's collection be 'x'
Let the Tremaine collection be 'x-39'
x + x - 39 =129
2x = 129 +39
2x = 168
x = 168/2
x = 84
Dulcina's collection = x = 84
Tremaine's collection = x - 39 = 84 - 39 = 45
Solution= x=5
Alernative form= 21 x - 105= 0<span />
111km
the ratio is 1:15 so you do 7.4×15
Answer:
Simply: It makes sure you get the correct answer
Step-by-step explanation:
Using order of operations (pemdas) ensures you do the correct operations in the correct order. If not, then everyone could get loads of different answers for the same question. It provides order in the math world.
Hope this helps!
60/500=36/x
60*x=500*36
x=(500*36)/60
x=(500*3)/5
x=300
