Seudónimo Seudónimo
  • 23-12-2015
  • Mathematics
contestada

Find two numbers that have a sum of 77.95 and a difference of 30.61

Respuesta :

Neuron
Neuron Neuron
  • 23-12-2015
If you would like to know the values of these two numbers, you can calculate this using the following steps:

a + b = 77.95
a - b = 
30.61 ... a = 30.61 + b
_______________________
a + b = 77.95
(30.61 + b) + b = 77.95
30.61 + 2 * b = 77.95
2 * b = 77.95 - 30.61
2 * b = 47.34    /2
b = 
47.34 / 2
b = 23.67

a = 
30.61 + b = 30.61 + 23.67 = 54.28

Result: The numbers are 
23.67 and 54.28.
Answer Link

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