With the information given, you don't know anything about (5x-7), except that it's equal to (5x-7).
If you could also get an actual number that it's equal to, then you could figure out the value of 'x'.
No. 5x7 is 35.
5x7, 1x35
5x7
Axiomatic
35
252
the it is 335 67x 5 ---- 35 5x7 =35 300 5x6o=300 ----- 335
5x7 paper is commonly referred to as "5x7 size" or "5x7 inches."
35
5-(5x7) 5-(35) =-30
35.
5x7 in the front and 5x7 in the back.