liyah1720 liyah1720
  • 11-02-2019
  • Mathematics
contestada

The sum of two numbers is 84. Their difference is 32

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hroscoe
hroscoe hroscoe
  • 11-02-2019
Set it up like:
x + y = 84
x - y = 32

You can add the equations to eliminate y:
2x + 0y = 116
2x = 116; now divide by 2 to isolate the x, and you get x= 58

Now plug x= 58 into either equation and solve for y.

58 + y = 84; subtract 58 from both sides to isolate y, and you get y= 26
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