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melamori03 [73]
3 years ago
13

How do I solve x+4y=22 -x+5y=23

Mathematics
2 answers:
wolverine [178]3 years ago
4 0
X+4y=22
<u>-x+5y=23            </u> (+)
<em>9y=45
y=5

</em>x+4*5=22
x=22-20
<em>x=2</em>
xxTIMURxx [149]3 years ago
3 0
{ x + 4y = 22     ( + x - x = 0 )
{ - x + 5y = 23

4y + 5y = 22 + 23
9y = 45
  y =<u> 45 </u>
         9
  y = 5

x + 4y = 22
x + 4 . 5 = 22
x + 20 = 22
x = 22 - 20
x = 2

S = { 2 , 5 }


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