i need to know how to do number sentences
12/15-7/15+/15=1
It would help if you proofread your questions before you posted them. What is the numerator in your third term? If it is an unknown, use "x".
12/15-7/15+x/15=1
To = 1, x = 10
12/15-7/15+/15=1
12/15-7/15+x/15=1
To = 1, x = 10