SOLUTION: Compute 1/(1*4) + 1/(4*7) + 1/(7*12)

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: Compute 1/(1*4) + 1/(4*7) + 1/(7*12)      Log On


   

Question 1209393: Compute
1/(1*4) + 1/(4*7) + 1/(7*12)
Answer by ikleyn(52777) About Me  (Show Source):
You can put this solution on YOUR website!
.

Work with common denominator 12*7


    1%2F%281%2A4%29 + 1%2F%284%2A7%29 + 1%2F%287%2A12%29 = %287%2A3%29%2F%287%2A12%29 + 3%2F%287%2A12%29 + 1%2F%287%2A12%29 = %2821+%2B+3+%2B+1%29%2F%287%2A12%29 = 25%2F84.         ANSWER

Solved.

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This is a typical and routine 5th grade assignment, where you
don't have to think - you just have to follow the pre-set rules.