In each instance they’re multiplying the number by 4, 1/2*4=2, 2*4=8, 8*4=32, and 32*4=128
7/8-1/2=13/4
how to get the answer:
u find the lowest common factor for both denominators:8
7/8-1/2
28 -2 26 13
---------- = -------- = --------
8 8 4
Answer:
3/14
Step-by-step explanation:
We need to line up the fractions. 5/7 on top, 1/2 on the bottom. We need to find common denominator so, 7 x 2 (denominators) gives us 14. 14 is now the denominator we will use. Solve for numerator: Starting at bottom fraction. 2 goes into 14 7 times, 7 times original numerator (1) 35. Theres your new numerator. Now, the top fraction: 7 goes into 14 2 times. 2 x original numerator (5) = 10. Now subtract both numerators (10 - 7 = 3) Plug in the denominator and your answer is: 3/14
