Systems of equations 5x+y=7 20x+2=y

Mathematics

1 answer:

saveliy_v [14]3 years ago

7 0

Step-by-step explanation:

5x+y=7

20x+2=y

put y value in first equation

5x+(20x+2)=7

25x=5

x=5

now put x value to determine y

as we know 20x+2=y

20(5)+2=y

y=102

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