If 3x = 7y, what are the following ratios?
3y: x

for

x

y

: To do this we must divide each side of the equation by

2

y

which will give us

x

y

while keeping the equation balance.

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870