The answer to 2/3-1/3 is 1/3 since there are 2 1/3 in 2/3.
You can use the butterfly method. Two numbers that equal A times C must also add up to B. A=1 B=-10 C=21. A times C is 21 and B is -10. Two numbers that multiply to 21 and add to -10 are -7 and -3. Factored form: ( x - 7 )( x - 3 ).
Answer:
11/8 or 1 & 3/8
Step-by-step explanation:
5 & 2/8=21/4
3&7/8=31/8
21/4-31/8=11/8 or 1 & 3/8