12/7 + 8/7
12+8 = 20
20/7 = 2 and 6/7ths
This is the answer -0.25,0.12,6/8
Answer:
why thank you :)
hope that continues for you and have an awesome day
Answer:
u = fv/(v - f)
Step-by-step explanation:
1/f = 1/u + 1/v
1/u = 1/f - 1/v = v/fv - f/fv = (v-f)/fv
1/u = (v-f)/fv
u = fv/(v - f)
