Hi! :) 19.7 - 6.8 is 12.9. If you need anymore help, ask me!
4^3 is 64 and 3^4 is 81. Therefore the answer to the circled question is -17.
Answer:
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Step-by-step explanation:
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Let x = the amount of time that the third person needs to work on the job to add up to one
1 = 1/2 + 1/3 + x
1 - 1/2 - 1/3 = x
To subtract the fractions we need to put them all over a common denominator. Let's use 3*2 = 6 as the denominator; so 1 = 6/6, 1/2 = 3/6, 1/3 = 2/6:
6/6 - 3/6 - 2/6 = x
1/6 = x
The third person must work 1/6 time on the project.
