Answer:
1.) 4; 5 / 12
2.) 39; 7 / 12
3.) 6; 17 / 20
4.) 2; 2 / 5
5.) 9; 43 / 56
6.) 2; 57 / 110
7.) 32; 41/63
8.) 7
9.) 143; 128 / 199
Step-by-step explanation:
When adding and subtracting fractions you want to find the LCD (Least common denominator)
1.) 5; 2/3 - 1; 1/4
3 6 9 12*
4 8 12*
The least common denominator is 12. now multiply the denominators and multiply their numerators by the same number.
(Numerator) 2 * 4 = 8 & 1 * 3 = 3
(Denominator) 3 * 4 = 12 & 4 * 3 = 12
5; 8 / 12 - 1; 3 / 12
Subtract the whole numbers
5 - 1 = 4
subtract only the numerators (dont subtract or add denominators)
8 - 3 = 5
4; 5 / 12
