Answer:
A simple example would be this:
3( 7x + 4) = 3(11x - 21)
Step-by-step explanation:
You line up the numbers shown in the photo, then add each column
D.500 meters is an expression of distance in SI units.
Answer: 5 days
so we need to find:
55 - 6a = 40 - 3a
with a being the days we need to find
-40 on each side
15 - 6a = -3a
+6a on each side
15 = 3a
divide each side by 3
5 = a