7•x=x-15
I think this would work, if I understood what you were saying correctly.
Given.
(1)
(2)
Re-arrange equation (2)
Multiply equation (2) by -1
(3)
Combine like terms and solve.
Divide by (2y) and solve for (y).
Substitute (y) for equation (1).
Add (8) to both sides.
Divide by (3).
Check your work.
Your answers is and
Given statement: 10 times as many as tens is 30 tens or hundreds.
In the given statement tens and hunderds used there.
Tens represents ten times, that is 10 x
We are given 30 tens.
30 tens could be written as 10 times 30 = 300.
30 tens could be could also be written as 10 times 3 tens.
Also 300 could be written as 3 hundreds.
Therefore, we can write final statement as " 10 times as many 3 as tens is 30 tens or 3 hundreds".
