bransom4206
05.10.2019 •
Mathematics
Estimate the height of yolanda's plant
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Ответ:
x=4 , y=-1
Step-by-step explanation:
X-y=5
X+y=3
If 1 and 2 are added then y will be eliminated
(1)+(2) gives : 2x=8 then x=4
Now substitute this value of x into either of the 2 equations and solve for y.
Let x=4 in (1) =4-y=5 = y=-2