If you factor it, you can get an equation that is equivalent. So take out a 6. that leaves you with 6(8+3x)
Plug in 6.5 for x.
-8.5x-3.5x=-78
-8.5(6.5)-3.5(6.5)=-78
-55.25-22.75=-78
-78=-78
Answer:
If there are 2 quarters for every 3 nickels,
then there are
quarters.
If there are 2 dimes for every quarter,
then there are
dimes.
If the number of pennies and nickels together are equal to the number of dimes, then there are
pennies.
X = 23
x - 7
(23) - 7 = 16
16 is your answer
hope this helps