Question

the equation 2x+5y=7 has a unique solution,if x and y are: a) national numbers
b) positive real number
c) real number
d) rational numbers
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Answer 1

Answer:

B will be the answer

Step-by-step explanation:

Answer 2

when x=1.

2(1)+5y=7

2+5y=7

5y=7-2

5y=5

y=5/5

y=1

2,1

when y=0

2x+0y=7

2x=7

x=7/2

7/2,0

Positive real no